File: pg_partman--1.7.2--1.8.0.sql

package info (click to toggle)
pg-partman 4.0.0-1
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 8,976 kB
  • sloc: sql: 113,983; python: 1,286; ansic: 346; makefile: 39; sh: 22
file content (3648 lines) | stat: -rw-r--r-- 164,864 bytes parent folder | download | duplicates (3)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
-- PG Partman now supports sub-partitioning. This allows automatic configuration to turn the child tables of an existing partition set into parent tables of their own partition sets. (Github Issue #26)
    -- New function "create_sub_parent()" works exactly like "create_parent()", even taking similar parameters. Instead, the parent_table you're giving it as a parameter is telling it which parent's child tables to partition and how to partition them.
    -- This can be chained down as many levels as desired. Just recall the 63 character limit on object names since this will be adding a new partition suffix every level down. The final suffix is always guarenteed to be added on in full, but the parent suffix name may get truncated off.
    -- Due to logical complexity (and possible contention issues at larger data sizes), when using subpartitioning, all parent tables at all partition levels are set to use run_maintenance() by default. This includes serial partitioning which normally by default can use a trigger based method to create future partitions. You can still set it to false so you can force maintenance to run at specific times (see new run_maintenance() feature below), but you MUST force it to run at some point otherwise new partitions will never be made.
    -- Note that there will ALWAYS be at least one child partition created, even for subpartition parents that are outside the current trigger range. Data outside the currently covered trigger range will still be inserted the the relevant parent.
    -- Note that for retention policies, whatever retention period is set on the highest level will be honored and ALL child tables will be dropped, cascading all the way down to the bottom. Use this option even more carefully!

-- New parent table name parameter to run_maintenance(). If set, skips all other tables for that maintenance run and only does the one given. (Github Issue #32)
    -- This is an optional parameter, so should not affect any existing use of the function. When not given, maintenance is run for all partition sets set to use it in the part_config table.
    -- The already existing configuration option in part_config (use_run_maintenance) can be used to tell run_maintenance() to skip any partition sets for which you do not want it to run when no table name parameter is given. You can then schedule partition maintenance for specific tables to run at specific times using the new argument to run_maintenance(). Note that if a parent table argument is explicitely given to run_maintenance, it will always run the maintenance for it no matter what the configuration table has set.
    -- Note that when a table argument is given to run_maintenance(), retention settings will only be run for that one specific table given (if configured).
    -- Be aware that the "use_run_maintenance" configuration option is always set to true for time-based partitioning & subpartition sets and set false for serial based partitioning (when not subpartitioned) when calling create_parent() or create_sub_parent(). Adjust this configuration setting accordingly so run_maintenance() does what you require after you create your partition sets.
    -- The trigger constraint on the **part_config** table that would not allow "use_run_maintenance" to be set to false for time based partitioning has been removed.

-- New analyze parameter to run_maintenance(). 
    -- Defaults to true so that if any partition set has a new child table created, an analyze is run on that whole partition set. This is to ensure constraint exclusion works properly.
    -- Large partition sets were causing run_maintenance() to take a long time to run since the analyze would hold it up. This could cause some contention.
    -- Setting p_analyze to false will cause the analyze to not run for ALL partition sets that are eligible for new partiton creation or retention management at the time it is called.
    -- If you set this to false, it is advised that you have some other means to ensure a regular analyze is being run on your partition sets.
    -- NOTE this parameter is set as the second argument since it's likely to be more commonly used, so make sure to check any current run_maintenence() calls to account for this (previously p_jobmon was the second parameter).

-- Analyze is no longer automatically run on the parent table after create_parent() is run. Since create_parent() takes an exclusive lock on the parent table during setup, tables that already had a lot of existing data where being locked for the length of the analyze run, which could be quite long. When data is partitioned out later, analyze is automatically run. Also, whenever new partitions are created in the future, an analyze will be run as well (if the p_analyze argument to run_maintenance() is true which it is by default). Both those cases should take care of updating the planner statistics when it begins to matter. Run an analyze on the parent table after setup if you want to be sure.
-- Fixed bug in show_partitions() that caused an error when the values in the control column of a serial partition set were larger than the max int value. This would also cause errors when partitioning existing data with values that high since the partitioning functions use show_partitions() internally. (Reported by S. Kristensen)
-- create_parent() and new create_sub_parent() now return a boolean value to determine whether they succeeded.
-- For all pythons scripts, changed the --connection default to "host=" instead of "host=localhost". This makes the default connection to the database use the local socket instead of TCP. Makes it act more predictibly like all other postgres executables (psql, pg_dump, etc). Please check any that you many have scheduled to run to ensure they are still working properly.
-- Added a --version argument to all python scripts. This tells you the minimum version of pg_partman this script is meant to work with.
-- Made sure all scripts in bin folder are added to Makefile for installation.
-- Make sure autovacuum is reset if SIGINT (Ctrl+C) is fired when using partition_data.py or undo_partition.py.
-- Added howto.md file to doc folder with some more extensive examples.
-- last_partition column in part_config table no longer in use. Dropped it.
-- Renamed internal functions create_id_partition(), create_id_function(), create_time_partition() & create_time_function() to create_partition_id(), create_function_id(), create_partition_time() & create_function_time() respectively. This gives all functions a consistent naming pattern.

CREATE TEMP TABLE partman_preserve_privs_temp (statement text);

INSERT INTO partman_preserve_privs_temp 
SELECT 'GRANT EXECUTE ON FUNCTION @extschema@.create_parent(text, text, text, text, text[], int, boolean, text, boolean, boolean, boolean) TO '||array_to_string(array_agg(grantee::text), ',')||';' 
FROM information_schema.routine_privileges
WHERE routine_schema = '@extschema@'
AND routine_name = 'create_parent'; 

INSERT INTO partman_preserve_privs_temp 
SELECT 'GRANT EXECUTE ON FUNCTION @extschema@.create_partition_id(text, bigint[], boolean) TO '||array_to_string(array_agg(grantee::text), ',')||';' 
FROM information_schema.routine_privileges
WHERE routine_schema = '@extschema@'
AND routine_name = 'create_id_partition'; 

INSERT INTO partman_preserve_privs_temp 
SELECT 'GRANT EXECUTE ON FUNCTION @extschema@.create_partition_time(text, timestamp[], boolean) TO '||array_to_string(array_agg(grantee::text), ',')||';' 
FROM information_schema.routine_privileges
WHERE routine_schema = '@extschema@'
AND routine_name = 'create_time_partition'; 

INSERT INTO partman_preserve_privs_temp 
SELECT 'GRANT EXECUTE ON FUNCTION @extschema@.create_function_time(text) TO '||array_to_string(array_agg(grantee::text), ',')||';' 
FROM information_schema.routine_privileges
WHERE routine_schema = '@extschema@'
AND routine_name = 'create_time_function'; 

INSERT INTO partman_preserve_privs_temp 
SELECT 'GRANT EXECUTE ON FUNCTION @extschema@.create_function_id(text) TO '||array_to_string(array_agg(grantee::text), ',')||';' 
FROM information_schema.routine_privileges
WHERE routine_schema = '@extschema@'
AND routine_name = 'create_id_function'; 

INSERT INTO partman_preserve_privs_temp 
SELECT 'GRANT EXECUTE ON FUNCTION @extschema@.run_maintenance(text, boolean, boolean) TO '||array_to_string(array_agg(grantee::text), ',')||';' 
FROM information_schema.routine_privileges
WHERE routine_schema = '@extschema@'
AND routine_name = 'run_maintenance';

DROP TRIGGER time_partition_maintenance_true_trig ON @extschema@.part_config;
DROP FUNCTION @extschema@.time_partition_maintenance_true_trig();
DROP FUNCTION @extschema@.create_parent(text, text, text, text, text[], int, boolean, text, boolean, boolean, boolean);
DROP FUNCTION @extschema@.create_id_partition (text, bigint[]);
DROP FUNCTION @extschema@.create_time_partition (text, timestamp[]);
DROP FUNCTION @extschema@.create_time_function(text);
DROP FUNCTION @extschema@.create_id_function(text);
DROP FUNCTION @extschema@.run_maintenance(boolean);

-- FK set deferrable because create_parent() inserts to this table before part_config
CREATE TABLE @extschema@.part_config_sub (
    sub_parent text PRIMARY KEY REFERENCES @extschema@.part_config (parent_table) ON DELETE CASCADE ON UPDATE CASCADE DEFERRABLE INITIALLY DEFERRED
    , sub_type text NOT NULL
    , sub_control text NOT NULL
    , sub_part_interval text NOT NULL
    , sub_constraint_cols text[]
    , sub_premake int NOT NULL DEFAULT 4
    , sub_inherit_fk boolean NOT NULL DEFAULT true
    , sub_retention text
    , sub_retention_schema text
    , sub_retention_keep_table boolean NOT NULL DEFAULT true
    , sub_retention_keep_index boolean NOT NULL DEFAULT true
    , sub_use_run_maintenance BOOLEAN NOT NULL DEFAULT true
    , sub_jobmon boolean NOT NULL DEFAULT true
);

ALTER TABLE @extschema@.part_config DROP COLUMN last_partition;

/* 
 * Ensure that sub-partitioned tables that are themselves sub-partitions have the same configuration options set when they are part of the same inheritance tree
 */
CREATE FUNCTION check_subpart_sameconfig(text) RETURNS boolean
    LANGUAGE sql STABLE
    AS $$
    WITH child_tables AS (
        SELECT n.nspname||'.'||c.relname AS tablename
        FROM pg_catalog.pg_inherits h
        JOIN pg_catalog.pg_class c ON c.oid = h.inhrelid
        JOIN pg_catalog.pg_namespace n ON c.relnamespace = n.oid
        WHERE h.inhparent::regclass = $1::regclass
    )
    SELECT CASE 
        WHEN count(*) <= 1 THEN
            true
        WHEN count(*) > 1 THEN
           false
       END
    FROM (
        SELECT DISTINCT sub_type
            , sub_control
            , sub_part_interval
            , sub_constraint_cols
            , sub_premake
            , sub_inherit_fk
            , sub_retention
            , sub_retention_schema
            , sub_retention_keep_table
            , sub_retention_keep_index
            , sub_use_run_maintenance
            , sub_jobmon
        FROM @extschema@.part_config_sub a
        JOIN child_tables b on a.sub_parent = b.tablename) x;
$$;

ALTER TABLE @extschema@.part_config_sub
ADD CONSTRAINT subpart_sameconfig_chk
CHECK (check_subpart_sameconfig(sub_parent));

/*
 * Create a partition set that is a subpartition of an already existing partition set.
 * Given the parent table of any current partition set, it will turn all existing children into parent tables of their own partition sets
 *      using the configuration options given as parameters to this function.
 * Uses another config table that allows for turning all future child partitions into a new parent automatically.
 * To avoid logical complications and contention issues, ALL subpartitions must be maintained using run_maintenance().
 * This means the automatic, trigger based partition creation for serial partitioning will not work if it is a subpartition.
 */
CREATE FUNCTION create_sub_parent(
    p_top_parent text
    , p_control text
    , p_type text
    , p_interval text
    , p_constraint_cols text[] DEFAULT NULL 
    , p_premake int DEFAULT 4
    , p_start_partition text DEFAULT NULL
    , p_inherit_fk boolean DEFAULT true
    , p_jobmon boolean DEFAULT true
    , p_debug boolean DEFAULT false) 
RETURNS boolean
    LANGUAGE plpgsql SECURITY DEFINER
    AS $$
DECLARE

v_last_partition    text;
v_row               record;
v_row_last_part     record;
v_run_maint         boolean;
v_sql               text;
v_success           boolean := false;
v_top_type          text;

BEGIN

SELECT use_run_maintenance INTO v_run_maint FROM @extschema@.part_config WHERE parent_table = p_top_parent;
IF v_run_maint IS NULL THEN
    RAISE EXCEPTION 'Cannot subpartition a table that is not managed by pg_partman already. Given top parent table not found in @extschema@.part_config: %', p_top_parent;
ELSIF v_run_maint = false THEN
    RAISE EXCEPTION 'Any parent table that will be part of a sub-partitioned set (on any level) must have use_run_maintenance set to true in part_config table, even for serial partitioning. See documentation for more info.';
END IF;

FOR v_row IN 
    -- Loop through all current children to turn them into partitioned tables
    SELECT show_partitions AS child_table FROM @extschema@.show_partitions(p_top_parent)
LOOP
    -- Just call existing create_parent() function but add the given parameters to the part_config_sub table as well
    v_sql := format('SELECT @extschema@.create_parent(
             p_parent_table := %L
            , p_control := %L
            , p_type := %L
            , p_interval := %L
            , p_constraint_cols := %L
            , p_premake := %L
            , p_use_run_maintenance := %L
            , p_start_partition := %L
            , p_inherit_fk := %L
            , p_jobmon := %L
            , p_debug := %L )'
        , v_row.child_table
        , p_control
        , p_type
        , p_interval
        , p_constraint_cols
        , p_premake
        , true
        , p_start_partition
        , p_inherit_fk
        , p_jobmon
        , p_debug);
    EXECUTE v_sql;

END LOOP;

INSERT INTO @extschema@.part_config_sub (
    sub_parent
    , sub_control
    , sub_type
    , sub_part_interval
    , sub_constraint_cols
    , sub_premake
    , sub_inherit_fk
    , sub_use_run_maintenance
    , sub_jobmon)
VALUES (
    p_top_parent
    , p_control
    , p_type
    , p_interval
    , p_constraint_cols
    , p_premake
    , p_inherit_fk
    , true
    , p_jobmon);

v_success := true;

RETURN v_success;

END
$$;


/*
 * Function to create id partitions
 */
CREATE FUNCTION create_partition_id(p_parent_table text, p_partition_ids bigint[], p_analyze boolean DEFAULT true) RETURNS boolean
    LANGUAGE plpgsql SECURITY DEFINER
    AS $$
DECLARE

v_all               text[] := ARRAY['SELECT', 'INSERT', 'UPDATE', 'DELETE', 'TRUNCATE', 'REFERENCES', 'TRIGGER'];
v_analyze           boolean := FALSE;
v_control           text;
v_grantees          text[];
v_hasoids           boolean;
v_id                bigint;
v_id_position       int;
v_inherit_fk        boolean;
v_job_id            bigint;
v_jobmon            boolean;
v_jobmon_schema     text;
v_old_search_path   text;
v_parent_grant      record;
v_parent_owner      text;
v_parent_schema     text;
v_parent_tablename  text;
v_parent_tablespace text;
v_part_interval     bigint;
v_partition_created boolean := false;
v_partition_name    text;
v_revoke            text[];
v_row               record;
v_sql               text;
v_step_id           bigint;
v_sub_id_max        bigint;
v_sub_id_min        bigint;
v_tablename         text;
v_top_interval      bigint;
v_top_parent        text;
v_unlogged          char;

BEGIN

SELECT control
    , part_interval
    , inherit_fk
    , jobmon
INTO v_control
    , v_part_interval
    , v_inherit_fk
    , v_jobmon
FROM @extschema@.part_config
WHERE parent_table = p_parent_table
AND (type = 'id-static' OR type = 'id-dynamic');

IF NOT FOUND THEN
    RAISE EXCEPTION 'ERROR: no config found for %', p_parent_table;
END IF;

IF v_jobmon THEN
    SELECT nspname INTO v_jobmon_schema FROM pg_namespace n, pg_extension e WHERE e.extname = 'pg_jobmon' AND e.extnamespace = n.oid;
    IF v_jobmon_schema IS NOT NULL THEN
        SELECT current_setting('search_path') INTO v_old_search_path;
        EXECUTE 'SELECT set_config(''search_path'',''@extschema@,'||v_jobmon_schema||''',''false'')';
    END IF;
END IF;

-- Check if parent table is a subpartition of an already existing id based partition set managed by pg_partman
-- If so, limit what child tables can be created based on parent suffix
WITH top_oid AS (
    SELECT i.inhparent AS top_parent_oid
    FROM pg_catalog.pg_class c
    JOIN pg_catalog.pg_inherits i ON c.oid = i.inhrelid
    JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
    WHERE n.nspname||'.'||c.relname = p_parent_table
) SELECT n.nspname||'.'||c.relname 
  INTO v_top_parent 
  FROM pg_catalog.pg_class c
  JOIN top_oid t ON c.oid = t.top_parent_oid
  JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
  JOIN @extschema@.part_config p ON p.parent_table = n.nspname||'.'||c.relname
  WHERE c.oid = t.top_parent_oid
  AND p.type = 'id-static' OR p.type = 'id-dynamic';

IF v_top_parent IS NOT NULL THEN 
    SELECT part_interval::bigint INTO v_top_interval FROM @extschema@.part_config WHERE parent_table = v_top_parent;
    v_id_position := (length(p_parent_table) - position('p_' in reverse(p_parent_table))) + 2;
    v_sub_id_min = substring(p_parent_table from v_id_position)::bigint;
    v_sub_id_max = (v_sub_id_min + v_top_interval) - 1;
END IF;

SELECT tableowner, schemaname, tablename, tablespace INTO v_parent_owner, v_parent_schema, v_parent_tablename, v_parent_tablespace FROM pg_tables WHERE schemaname ||'.'|| tablename = p_parent_table;

FOREACH v_id IN ARRAY p_partition_ids LOOP
-- Do not create the child table if it's outside the bounds of the top parent. 
    IF v_sub_id_min IS NOT NULL THEN
        IF v_id < v_sub_id_min OR v_id > v_sub_id_max THEN
            CONTINUE;
        END IF;
    END IF;

    v_partition_name := @extschema@.check_name_length(v_parent_tablename, v_parent_schema, v_id::text, TRUE);
    -- If child table already exists, skip creation
    SELECT tablename INTO v_tablename FROM pg_catalog.pg_tables WHERE schemaname ||'.'|| tablename = v_partition_name;
    IF v_tablename IS NOT NULL THEN
        CONTINUE;
    END IF;

    -- Ensure analyze is run if a new partition is created. Otherwise if one isn't, will be false and analyze will be skipped
    v_analyze := TRUE;

    IF v_jobmon_schema IS NOT NULL THEN
        v_job_id := add_job('PARTMAN CREATE TABLE: '||p_parent_table);
        v_step_id := add_step(v_job_id, 'Creating new partition '||v_partition_name||' with interval from '||v_id||' to '||(v_id + v_part_interval)-1);
    END IF;

    SELECT relpersistence INTO v_unlogged FROM pg_catalog.pg_class WHERE oid::regclass = p_parent_table::regclass;
    v_sql := 'CREATE';
    IF v_unlogged = 'u' THEN
        v_sql := v_sql || ' UNLOGGED';
    END IF;
    v_sql := v_sql || ' TABLE '||v_partition_name||' (LIKE '||p_parent_table||' INCLUDING DEFAULTS INCLUDING CONSTRAINTS INCLUDING INDEXES INCLUDING STORAGE INCLUDING COMMENTS)';
    SELECT relhasoids INTO v_hasoids FROM pg_catalog.pg_class WHERE oid::regclass = p_parent_table::regclass;
    IF v_hasoids IS TRUE THEN
        v_sql := v_sql || ' WITH (OIDS)';
    END IF;
    EXECUTE v_sql;
    SELECT tablename INTO v_tablename FROM pg_catalog.pg_tables WHERE schemaname ||'.'|| tablename = v_partition_name;
    IF v_parent_tablespace IS NOT NULL THEN
        EXECUTE 'ALTER TABLE '||v_partition_name||' SET TABLESPACE '||v_parent_tablespace;
    END IF;
    EXECUTE 'ALTER TABLE '||v_partition_name||' ADD CONSTRAINT '||v_tablename||'_partition_check 
        CHECK ('||v_control||'>='||quote_literal(v_id)||' AND '||v_control||'<'||quote_literal(v_id + v_part_interval)||')';
    EXECUTE 'ALTER TABLE '||v_partition_name||' INHERIT '||p_parent_table;

    FOR v_parent_grant IN 
        SELECT array_agg(DISTINCT privilege_type::text ORDER BY privilege_type::text) AS types, grantee
        FROM information_schema.table_privileges 
        WHERE table_schema ||'.'|| table_name = p_parent_table
        GROUP BY grantee 
    LOOP
        EXECUTE 'GRANT '||array_to_string(v_parent_grant.types, ',')||' ON '||v_partition_name||' TO '||v_parent_grant.grantee;
        SELECT array_agg(r) INTO v_revoke FROM (SELECT unnest(v_all) AS r EXCEPT SELECT unnest(v_parent_grant.types)) x;
        IF v_revoke IS NOT NULL THEN
            EXECUTE 'REVOKE '||array_to_string(v_revoke, ',')||' ON '||v_partition_name||' FROM '||v_parent_grant.grantee||' CASCADE';
        END IF;
        v_grantees := array_append(v_grantees, v_parent_grant.grantee::text);
    END LOOP;
    -- Revoke all privileges from roles that have none on the parent
    IF v_grantees IS NOT NULL THEN
        SELECT array_agg(r) INTO v_revoke FROM (
            SELECT DISTINCT grantee::text AS r FROM information_schema.table_privileges WHERE table_schema ||'.'|| table_name = v_partition_name
            EXCEPT
            SELECT unnest(v_grantees)) x;
        IF v_revoke IS NOT NULL THEN
            EXECUTE 'REVOKE ALL ON '||v_partition_name||' FROM '||array_to_string(v_revoke, ',');
        END IF;
    END IF;

    EXECUTE 'ALTER TABLE '||v_partition_name||' OWNER TO '||v_parent_owner;

    IF v_inherit_fk THEN
        PERFORM @extschema@.apply_foreign_keys(quote_ident(v_parent_schema)||'.'||quote_ident(v_parent_tablename), v_partition_name);
    END IF;

    IF v_jobmon_schema IS NOT NULL THEN
        PERFORM update_step(v_step_id, 'OK', 'Done');
    END IF;

    -- Will only loop once and only if sub_partitioning is actually configured
    -- This seemed easier than assigning a bunch of variables then doing an IF condition
    FOR v_row IN 
        SELECT sub_parent
            , sub_control
            , sub_type
            , sub_part_interval
            , sub_constraint_cols
            , sub_premake
            , sub_inherit_fk
            , sub_retention
            , sub_retention_schema
            , sub_retention_keep_table
            , sub_retention_keep_index
            , sub_use_run_maintenance
            , sub_jobmon
        FROM @extschema@.part_config_sub
        WHERE sub_parent = p_parent_table
    LOOP
        IF v_jobmon_schema IS NOT NULL THEN
            v_step_id := add_step(v_job_id, 'Subpartitioning '||v_partition_name);
        END IF;
        v_sql := format('SELECT @extschema@.create_parent(
                 p_parent_table := %L
                , p_control := %L
                , p_type := %L
                , p_interval := %L
                , p_constraint_cols := %L
                , p_premake := %L
                , p_use_run_maintenance := %L
                , p_inherit_fk := %L
                , p_jobmon := %L )'
            , v_partition_name
            , v_row.sub_control
            , v_row.sub_type
            , v_row.sub_part_interval
            , v_row.sub_constraint_cols
            , v_row.sub_premake
            , v_row.sub_inherit_fk
            , v_row.sub_use_run_maintenance
            , v_row.sub_jobmon);
        EXECUTE v_sql;

        UPDATE @extschema@.part_config SET 
            retention_schema = v_row.sub_retention_schema
            , retention_keep_table = v_row.sub_retention_keep_table
            , retention_keep_index = v_row.sub_retention_keep_index
        WHERE parent_table = v_partition_name;

        IF v_jobmon_schema IS NOT NULL THEN
            PERFORM update_step(v_step_id, 'OK', 'Done');
        END IF;

    END LOOP; -- end sub partitioning LOOP

    IF v_jobmon_schema IS NOT NULL THEN
        PERFORM close_job(v_job_id);
    END IF;
    
    v_partition_created := true;

END LOOP;

-- v_analyze is a local check if a new table is made.
-- p_analyze is a parameter to say whether to run the analyze at all. Used by create_parent() to avoid long exclusive lock or run_maintenence() to avoid long creation runs.
IF v_analyze AND p_analyze THEN
    EXECUTE 'ANALYZE '||p_parent_table;
END IF;

IF v_jobmon_schema IS NOT NULL THEN
    EXECUTE 'SELECT set_config(''search_path'','''||v_old_search_path||''',''false'')';
END IF;

RETURN v_partition_created;

EXCEPTION
    WHEN OTHERS THEN
        IF v_jobmon_schema IS NOT NULL THEN
            IF v_job_id IS NULL THEN
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_job(''PARTMAN CREATE TABLE: '||p_parent_table||''')' INTO v_job_id;
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_step('||v_job_id||', ''EXCEPTION before job logging started'')' INTO v_step_id;
            ELSIF v_step_id IS NULL THEN
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_step('||v_job_id||', ''EXCEPTION before first step logged'')' INTO v_step_id;
            END IF;
            EXECUTE 'SELECT '||v_jobmon_schema||'.update_step('||v_step_id||', ''CRITICAL'', ''ERROR: '||coalesce(SQLERRM,'unknown')||''')';
            EXECUTE 'SELECT '||v_jobmon_schema||'.fail_job('||v_job_id||')';
        END IF;
        RAISE EXCEPTION '%', SQLERRM;
END
$$;


/*
 * Function to create a child table in a time-based partition set
 */
CREATE FUNCTION create_partition_time (p_parent_table text, p_partition_times timestamp[], p_analyze boolean DEFAULT true) 
RETURNS boolean
    LANGUAGE plpgsql SECURITY DEFINER
    AS $$
DECLARE

v_all                           text[] := ARRAY['SELECT', 'INSERT', 'UPDATE', 'DELETE', 'TRUNCATE', 'REFERENCES', 'TRIGGER'];
v_analyze                       boolean := FALSE;
v_control                       text;
v_datetime_string               text;
v_grantees                      text[];
v_hasoids                       boolean;
v_inherit_fk                    boolean;
v_job_id                        bigint;
v_jobmon                        boolean;
v_jobmon_schema                 text;
v_old_search_path               text;
v_parent_grant                  record;
v_parent_owner                  text;
v_parent_schema                 text;
v_parent_tablename              text;
v_partition_created             boolean := false;
v_partition_name                text;
v_partition_suffix              text;
v_parent_tablespace             text;
v_part_interval                 interval;
v_partition_timestamp_end       timestamp;
v_partition_timestamp_start     timestamp;
v_quarter                       text;
v_revoke                        text[];
v_row                           record;
v_sql                           text;
v_step_id                       bigint;
v_step_overflow_id              bigint;
v_sub_timestamp_max             timestamp;
v_sub_timestamp_min             timestamp;
v_tablename                     text;
v_time_position                 int;
v_top_interval                  interval;
v_top_parent                    text;
v_trunc_value                   text;
v_time                          timestamp;
v_type                          text;
v_unlogged                      char;
v_year                          text;

BEGIN

SELECT type
    , control
    , part_interval
    , inherit_fk
    , jobmon
    , datetime_string
INTO v_type
    , v_control
    , v_part_interval
    , v_inherit_fk
    , v_jobmon
    , v_datetime_string
FROM @extschema@.part_config
WHERE parent_table = p_parent_table
AND (type = 'time-static' OR type = 'time-dynamic' OR type = 'time-custom');

IF NOT FOUND THEN
    RAISE EXCEPTION 'ERROR: no config found for %', p_parent_table;
END IF;

IF v_jobmon THEN
    SELECT nspname INTO v_jobmon_schema FROM pg_namespace n, pg_extension e WHERE e.extname = 'pg_jobmon' AND e.extnamespace = n.oid;
    IF v_jobmon_schema IS NOT NULL THEN
        SELECT current_setting('search_path') INTO v_old_search_path;
        EXECUTE 'SELECT set_config(''search_path'',''@extschema@,'||v_jobmon_schema||''',''false'')';
    END IF;
END IF;

-- Check if parent table is a subpartition of an already existing time-based partition set managed by pg_partman
-- If so, limit what child tables can be created based on parent suffix
WITH top_oid AS (
    SELECT i.inhparent AS top_parent_oid
    FROM pg_catalog.pg_class c
    JOIN pg_catalog.pg_inherits i ON c.oid = i.inhrelid
    JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
    WHERE n.nspname||'.'||c.relname = p_parent_table
) SELECT n.nspname||'.'||c.relname 
  INTO v_top_parent 
  FROM pg_catalog.pg_class c
  JOIN top_oid t ON c.oid = t.top_parent_oid
  JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
  JOIN @extschema@.part_config p ON p.parent_table = n.nspname||'.'||c.relname
  WHERE c.oid = t.top_parent_oid
  AND p.type = 'time-static' OR p.type = 'time-dynamic';

IF v_top_parent IS NOT NULL THEN 

    SELECT part_interval::interval INTO v_top_interval FROM @extschema@.part_config WHERE parent_table = v_top_parent;

    v_time_position := (length(p_parent_table) - position('p_' in reverse(p_parent_table))) + 2;
    IF v_part_interval::interval <> '3 months' OR (v_part_interval::interval = '3 months' AND v_type = 'time-custom') THEN
       v_sub_timestamp_min := to_timestamp(substring(p_parent_table from v_time_position), v_datetime_string);
    ELSE
        -- to_timestamp doesn't recognize 'Q' date string formater. Handle it
        v_year := split_part(substring(p_parent_table from v_time_position), 'q', 1);
        v_quarter := split_part(substring(p_parent_table from v_time_position), 'q', 2);
        CASE
            WHEN v_quarter = '1' THEN
                v_sub_timestamp_min := to_timestamp(v_year || '-01-01', 'YYYY-MM-DD');
            WHEN v_quarter = '2' THEN
                v_sub_timestamp_min := to_timestamp(v_year || '-04-01', 'YYYY-MM-DD');
            WHEN v_quarter = '3' THEN
                v_sub_timestamp_min := to_timestamp(v_year || '-07-01', 'YYYY-MM-DD');
            WHEN v_quarter = '4' THEN
                v_sub_timestamp_min := to_timestamp(v_year || '-10-01', 'YYYY-MM-DD');
        END CASE;
    END IF;
    v_sub_timestamp_max = (v_sub_timestamp_min + v_top_interval::interval) - '1 sec'::interval;

END IF;

SELECT tableowner, schemaname, tablename, tablespace INTO v_parent_owner, v_parent_schema, v_parent_tablename, v_parent_tablespace FROM pg_tables WHERE schemaname ||'.'|| tablename = p_parent_table;

FOREACH v_time IN ARRAY p_partition_times LOOP    
    v_partition_timestamp_start := v_time;
    BEGIN
        v_partition_timestamp_end := v_time + v_part_interval;
    EXCEPTION WHEN datetime_field_overflow THEN
        RAISE WARNING 'Attempted partition time interval is outside PostgreSQL''s supported time range. 
            Child partition creation after time % skipped', v_time;
        v_step_overflow_id := add_step(v_job_id, 'Attempted partition time interval is outside PostgreSQL''s supported time range.');
        PERFORM update_step(v_step_overflow_id, 'CRITICAL', 'Child partition creation after time '||v_time||' skipped');
        CONTINUE;
    END;

    -- This suffix generation code is in partition_data_time() as well
    v_partition_suffix := to_char(v_time, 'YYYY');
    IF v_part_interval < '1 year' AND v_part_interval <> '1 week' THEN 
        v_partition_suffix := v_partition_suffix ||'_'|| to_char(v_time, 'MM');
        IF v_part_interval < '1 month' AND v_part_interval <> '1 week' THEN 
            v_partition_suffix := v_partition_suffix ||'_'|| to_char(v_time, 'DD');
            IF v_part_interval < '1 day' THEN
                v_partition_suffix := v_partition_suffix || '_' || to_char(v_time, 'HH24MI');
                IF v_part_interval < '1 minute' THEN
                    v_partition_suffix := v_partition_suffix || to_char(v_time, 'SS');
                END IF; -- end < minute IF
            END IF; -- end < day IF      
        END IF; -- end < month IF
    END IF; -- end < year IF

    IF v_part_interval = '1 week' THEN
        v_partition_suffix := to_char(v_time, 'IYYY') || 'w' || to_char(v_time, 'IW');
    END IF;

    -- "Q" is ignored in to_timestamp, so handle special case
    IF v_part_interval = '3 months' AND (v_type = 'time-static' OR v_type = 'time-dynamic') THEN
        v_year := to_char(v_time, 'YYYY');
        v_quarter := to_char(v_time, 'Q');
        v_partition_suffix := v_year || 'q' || v_quarter;
    END IF;


-- Do not create the child table if it's outside the bounds of the top parent. 
    IF v_sub_timestamp_min IS NOT NULL THEN
        IF v_time < v_sub_timestamp_min OR v_time > v_sub_timestamp_max THEN
            CONTINUE;
        END IF;
    END IF;

    v_partition_name := @extschema@.check_name_length(v_parent_tablename, v_parent_schema, v_partition_suffix, TRUE);
    SELECT tablename INTO v_tablename FROM pg_catalog.pg_tables WHERE schemaname ||'.'|| tablename = v_partition_name;
    IF v_tablename IS NOT NULL THEN
        CONTINUE;
    END IF;

    -- Ensure analyze is run if a new partition is created. Otherwise if one isn't, will be false and analyze will be skipped
    v_analyze := TRUE;

    IF v_jobmon_schema IS NOT NULL THEN
        v_job_id := add_job('PARTMAN CREATE TABLE: '||p_parent_table);
        v_step_id := add_step(v_job_id, 'Creating new partition '||v_partition_name||' with interval from '||v_partition_timestamp_start||' to '||(v_partition_timestamp_end-'1sec'::interval));
    END IF;

    SELECT relpersistence INTO v_unlogged FROM pg_catalog.pg_class WHERE oid::regclass = p_parent_table::regclass;
    v_sql := 'CREATE';
    IF v_unlogged = 'u' THEN
        v_sql := v_sql || ' UNLOGGED';
    END IF;
    v_sql := v_sql || ' TABLE '||v_partition_name||' (LIKE '||p_parent_table||' INCLUDING DEFAULTS INCLUDING CONSTRAINTS INCLUDING INDEXES INCLUDING STORAGE INCLUDING COMMENTS)';
    SELECT relhasoids INTO v_hasoids FROM pg_catalog.pg_class WHERE oid::regclass = p_parent_table::regclass;
    IF v_hasoids IS TRUE THEN
        v_sql := v_sql || ' WITH (OIDS)';
    END IF;
    EXECUTE v_sql;
    SELECT tablename INTO v_tablename FROM pg_catalog.pg_tables WHERE schemaname ||'.'|| tablename = v_partition_name;
    IF v_parent_tablespace IS NOT NULL THEN
        EXECUTE 'ALTER TABLE '||v_partition_name||' SET TABLESPACE '||v_parent_tablespace;
    END IF;
    EXECUTE 'ALTER TABLE '||v_partition_name||' ADD CONSTRAINT '||v_tablename||'_partition_check
        CHECK ('||v_control||'>='||quote_literal(v_partition_timestamp_start)||' AND '||v_control||'<'||quote_literal(v_partition_timestamp_end)||')';
    EXECUTE 'ALTER TABLE '||v_partition_name||' INHERIT '||p_parent_table;

    -- If custom time, set extra config options.
    IF v_type = 'time-custom' THEN
        INSERT INTO @extschema@.custom_time_partitions (parent_table, child_table, partition_range)
        VALUES ( p_parent_table, v_partition_name, tstzrange(v_partition_timestamp_start, v_partition_timestamp_end, '[)') );
    END IF;

    FOR v_parent_grant IN 
        SELECT array_agg(DISTINCT privilege_type::text ORDER BY privilege_type::text) AS types, grantee
        FROM information_schema.table_privileges 
        WHERE table_schema ||'.'|| table_name = p_parent_table
        GROUP BY grantee 
    LOOP
        EXECUTE 'GRANT '||array_to_string(v_parent_grant.types, ',')||' ON '||v_partition_name||' TO '||v_parent_grant.grantee;
        SELECT array_agg(r) INTO v_revoke FROM (SELECT unnest(v_all) AS r EXCEPT SELECT unnest(v_parent_grant.types)) x;
        IF v_revoke IS NOT NULL THEN
            EXECUTE 'REVOKE '||array_to_string(v_revoke, ',')||' ON '||v_partition_name||' FROM '||v_parent_grant.grantee||' CASCADE';
        END IF;
        v_grantees := array_append(v_grantees, v_parent_grant.grantee::text);
    END LOOP;
    -- Revoke all privileges from roles that have none on the parent
    IF v_grantees IS NOT NULL THEN
        SELECT array_agg(r) INTO v_revoke FROM (
            SELECT DISTINCT grantee::text AS r FROM information_schema.table_privileges WHERE table_schema ||'.'|| table_name = v_partition_name
            EXCEPT
            SELECT unnest(v_grantees)) x;
        IF v_revoke IS NOT NULL THEN
            EXECUTE 'REVOKE ALL ON '||v_partition_name||' FROM '||array_to_string(v_revoke, ',');
        END IF;
    END IF;

    EXECUTE 'ALTER TABLE '||v_partition_name||' OWNER TO '||v_parent_owner;

    IF v_inherit_fk THEN
        PERFORM @extschema@.apply_foreign_keys(quote_ident(v_parent_schema)||'.'||quote_ident(v_parent_tablename), v_partition_name);
    END IF;

    IF v_jobmon_schema IS NOT NULL THEN
        PERFORM update_step(v_step_id, 'OK', 'Done');
    END IF;

    -- Will only loop once and only if sub_partitioning is actually configured
    -- This seemed easier than assigning a bunch of variables then doing an IF condition
    FOR v_row IN 
        SELECT sub_parent
            , sub_control
            , sub_type
            , sub_part_interval
            , sub_constraint_cols
            , sub_premake
            , sub_inherit_fk
            , sub_retention
            , sub_retention_schema
            , sub_retention_keep_table
            , sub_retention_keep_index
            , sub_use_run_maintenance
            , sub_jobmon
        FROM @extschema@.part_config_sub
        WHERE sub_parent = p_parent_table
    LOOP
        IF v_jobmon_schema IS NOT NULL THEN
            v_step_id := add_step(v_job_id, 'Subpartitioning '||v_partition_name);
        END IF;
        v_sql := format('SELECT @extschema@.create_parent(
                 p_parent_table := %L
                , p_control := %L
                , p_type := %L
                , p_interval := %L
                , p_constraint_cols := %L
                , p_premake := %L
                , p_use_run_maintenance := %L
                , p_inherit_fk := %L
                , p_jobmon := %L )'
            , v_partition_name
            , v_row.sub_control
            , v_row.sub_type
            , v_row.sub_part_interval
            , v_row.sub_constraint_cols
            , v_row.sub_premake
            , v_row.sub_inherit_fk
            , v_row.sub_use_run_maintenance
            , v_row.sub_jobmon);
        EXECUTE v_sql;

        UPDATE @extschema@.part_config SET 
            retention_schema = v_row.sub_retention_schema
            , retention_keep_table = v_row.sub_retention_keep_table
            , retention_keep_index = v_row.sub_retention_keep_index
        WHERE parent_table = v_partition_name;

    END LOOP; -- end sub partitioning LOOP

    IF v_jobmon_schema IS NOT NULL THEN
        IF v_step_overflow_id IS NOT NULL THEN
            PERFORM fail_job(v_job_id);
        ELSE
            PERFORM close_job(v_job_id);
        END IF;
    END IF;

    v_partition_created := true;

END LOOP;

-- v_analyze is a local check if a new table is made.
-- p_analyze is a parameter to say whether to run the analyze at all. Used by create_parent() to avoid long exclusive lock or run_maintenence() to avoid long creation runs.
IF v_analyze AND p_analyze THEN
    EXECUTE 'ANALYZE '||p_parent_table;
END IF;

IF v_jobmon_schema IS NOT NULL THEN
    EXECUTE 'SELECT set_config(''search_path'','''||v_old_search_path||''',''false'')';
END IF;

RETURN v_partition_created;

EXCEPTION
    WHEN OTHERS THEN
        IF v_jobmon_schema IS NOT NULL THEN
            IF v_job_id IS NULL THEN
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_job(''PARTMAN CREATE TABLE: '||p_parent_table||''')' INTO v_job_id;
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_step('||v_job_id||', ''EXCEPTION before job logging started'')' INTO v_step_id;
            ELSIF v_step_id IS NULL THEN
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_step('||v_job_id||', ''EXCEPTION before first step logged'')' INTO v_step_id;
            END IF;
            EXECUTE 'SELECT '||v_jobmon_schema||'.update_step('||v_step_id||', ''CRITICAL'', ''ERROR: '||coalesce(SQLERRM,'unknown')||''')';
            EXECUTE 'SELECT '||v_jobmon_schema||'.fail_job('||v_job_id||')';
        END IF;
        RAISE EXCEPTION '%', SQLERRM;
END
$$;


/*
 * Function to turn a table into the parent of a partition set
 */
CREATE FUNCTION create_parent(
    p_parent_table text
    , p_control text
    , p_type text
    , p_interval text
    , p_constraint_cols text[] DEFAULT NULL 
    , p_premake int DEFAULT 4
    , p_use_run_maintenance boolean DEFAULT NULL
    , p_start_partition text DEFAULT NULL
    , p_inherit_fk boolean DEFAULT true
    , p_jobmon boolean DEFAULT true
    , p_debug boolean DEFAULT false) 
RETURNS boolean 
    LANGUAGE plpgsql SECURITY DEFINER
    AS $$
DECLARE

v_base_timestamp                timestamp;
v_count                         int := 1;
v_datetime_string               text;
v_higher_parent                 text := p_parent_table;
v_id_interval                   bigint;
v_id_position                   int;
v_job_id                        bigint;
v_jobmon_schema                 text;
v_last_partition_created        boolean;
v_max                           bigint;
v_notnull                       boolean;
v_old_search_path               text;
v_parent_partition_id           bigint;
v_parent_partition_timestamp    timestamp;
v_partition_time                timestamp;
v_partition_time_array          timestamp[];
v_partition_id_array            bigint[];
v_row                           record;
v_run_maint                     boolean;
v_sql                           text;
v_start_time                    timestamp;
v_starting_partition_id         bigint;
v_step_id                       bigint;
v_step_overflow_id              bigint;
v_sub_parent                    text;
v_success                       boolean := false;
v_tablename                     text;
v_time_interval                 interval;
v_time_position                 int;
v_top_parent                    text := p_parent_table;

BEGIN

IF position('.' in p_parent_table) = 0  THEN
    RAISE EXCEPTION 'Parent table must be schema qualified';
END IF;

SELECT tablename INTO v_tablename FROM pg_tables WHERE schemaname || '.' || tablename = p_parent_table;
    IF v_tablename IS NULL THEN
        RAISE EXCEPTION 'Please create given parent table first: %', p_parent_table;
    END IF;

SELECT attnotnull INTO v_notnull FROM pg_attribute WHERE attrelid = p_parent_table::regclass AND attname = p_control;
    IF v_notnull = false OR v_notnull IS NULL THEN
        RAISE EXCEPTION 'Control column (%) for parent table (%) must be NOT NULL', p_control, p_parent_table;
    END IF;

IF NOT @extschema@.check_partition_type(p_type) THEN
    RAISE EXCEPTION '% is not a valid partitioning type', p_type;
END IF;

IF p_type = 'time-custom' AND @extschema@.check_version('9.2.0') IS FALSE THEN
    RAISE EXCEPTION 'The "time-custom" type requires a minimum PostgreSQL version of 9.2.0';
END IF;

EXECUTE 'LOCK TABLE '||p_parent_table||' IN ACCESS EXCLUSIVE MODE';

IF p_jobmon THEN
    SELECT nspname INTO v_jobmon_schema FROM pg_namespace n, pg_extension e WHERE e.extname = 'pg_jobmon' AND e.extnamespace = n.oid;
    IF v_jobmon_schema IS NOT NULL THEN
        SELECT current_setting('search_path') INTO v_old_search_path;
        EXECUTE 'SELECT set_config(''search_path'',''@extschema@,'||v_jobmon_schema||''',''false'')';
    END IF;
END IF;

IF p_use_run_maintenance IS NOT NULL THEN
    IF p_use_run_maintenance IS FALSE AND (p_type = 'time-static' OR p_type = 'time-dynamic' OR p_type = 'time-custom') THEN
        RAISE EXCEPTION 'p_run_maintenance cannot be set to false for time based partitioning';
    END IF;
    v_run_maint := p_use_run_maintenance;
ELSIF p_type = 'time-static' OR p_type = 'time-dynamic' OR p_type = 'time-custom' THEN
    v_run_maint := TRUE;
ELSIF p_type = 'id-static' OR p_type ='id-dynamic' THEN
    v_run_maint := FALSE;
ELSE
    RAISE EXCEPTION 'use_run_maintenance value cannot be set NULL';
END IF;

IF v_jobmon_schema IS NOT NULL THEN
    v_job_id := add_job('PARTMAN SETUP PARENT: '||p_parent_table);
    v_step_id := add_step(v_job_id, 'Creating initial partitions on new parent table: '||p_parent_table);
END IF;

-- If this parent table has siblings that are also partitioned (subpartitions), ensure it gets added to part_config_sub table so future maintenance will subpartition it
-- Just doing in a loop to avoid having to assign a bunch of variables (should only run once, if at all; constraint should enforce only one value.)
FOR v_row IN 
    WITH parent_table AS (
        SELECT h.inhparent as parent_oid
        from pg_inherits h
        where h.inhrelid::regclass = p_parent_table::regclass
    ), sibling_children as (
        select i.inhrelid::regclass::text as tablename 
        from pg_inherits i
        join parent_table p on i.inhparent = p.parent_oid
    )
    SELECT DISTINCT sub_type
        , sub_control
        , sub_part_interval
        , sub_constraint_cols
        , sub_premake
        , sub_inherit_fk
        , sub_retention
        , sub_retention_schema
        , sub_retention_keep_table
        , sub_retention_keep_index
        , sub_use_run_maintenance
        , sub_jobmon
    FROM @extschema@.part_config_sub a
    JOIN sibling_children b on a.sub_parent = b.tablename LIMIT 1
LOOP
    INSERT INTO @extschema@.part_config_sub (
        sub_parent
        , sub_type
        , sub_control
        , sub_part_interval
        , sub_constraint_cols
        , sub_premake
        , sub_inherit_fk
        , sub_retention
        , sub_retention_schema
        , sub_retention_keep_table
        , sub_retention_keep_index
        , sub_use_run_maintenance
        , sub_jobmon)
    VALUES (
        p_parent_table
        , v_row.sub_type
        , v_row.sub_control
        , v_row.sub_part_interval
        , v_row.sub_constraint_cols
        , v_row.sub_premake
        , v_row.sub_inherit_fk
        , v_row.sub_retention
        , v_row.sub_retention_schema
        , v_row.sub_retention_keep_table
        , v_row.sub_retention_keep_index
        , v_row.sub_use_run_maintenance
        , v_row.sub_jobmon);
END LOOP;

IF p_type = 'time-static' OR p_type = 'time-dynamic' OR p_type = 'time-custom' THEN

    CASE
        WHEN p_interval = 'yearly' THEN
            v_time_interval := '1 year';
        WHEN p_interval = 'quarterly' THEN
            v_time_interval := '3 months';
        WHEN p_interval = 'monthly' THEN
            v_time_interval := '1 month';
        WHEN p_interval  = 'weekly' THEN
            v_time_interval := '1 week';
        WHEN p_interval = 'daily' THEN
            v_time_interval := '1 day';
        WHEN p_interval = 'hourly' THEN
            v_time_interval := '1 hour';
        WHEN p_interval = 'half-hour' THEN
            v_time_interval := '30 mins';
        WHEN p_interval = 'quarter-hour' THEN
            v_time_interval := '15 mins';
        ELSE
            IF p_type <> 'time-custom' THEN
                RAISE EXCEPTION 'Must use a predefined time interval if not using type "time-custom". See documentation.';
            END IF;
            v_time_interval := p_interval::interval;
            IF v_time_interval < '1 second'::interval THEN
                RAISE EXCEPTION 'Partitioning interval must be 1 second or greater';
            END IF;
    END CASE;

    -- First partition is either the min premake or p_start_partition
    v_start_time := COALESCE(p_start_partition::timestamp, CURRENT_TIMESTAMP - (v_time_interval * p_premake));

    IF v_time_interval >= '1 year' THEN
        v_base_timestamp := date_trunc('year', v_start_time);
        IF v_time_interval >= '10 years' THEN
            v_base_timestamp := date_trunc('decade', v_start_time);
            IF v_time_interval >= '100 years' THEN
                v_base_timestamp := date_trunc('century', v_start_time);
                IF v_time_interval >= '1000 years' THEN
                    v_base_timestamp := date_trunc('millennium', v_start_time);
                END IF; -- 1000
            END IF; -- 100
        END IF; -- 10
    END IF; -- 1
   
    v_datetime_string := 'YYYY';
    IF v_time_interval < '1 year' THEN
        IF p_interval = 'quarterly' THEN
            v_base_timestamp := date_trunc('quarter', v_start_time);
            v_datetime_string = 'YYYY"q"Q';
        ELSE
            v_base_timestamp := date_trunc('month', v_start_time); 
            v_datetime_string := v_datetime_string || '_MM';
        END IF;
        IF v_time_interval < '1 month' THEN
            IF p_interval = 'weekly' THEN
                v_base_timestamp := date_trunc('week', v_start_time);
                v_datetime_string := 'IYYY"w"IW';
            ELSE 
                v_base_timestamp := date_trunc('day', v_start_time);
                v_datetime_string := v_datetime_string || '_DD';
            END IF;
            IF v_time_interval < '1 day' THEN
                v_base_timestamp := date_trunc('hour', v_start_time);
                v_datetime_string := v_datetime_string || '_HH24MI';
                IF v_time_interval < '1 minute' THEN
                    v_base_timestamp := date_trunc('minute', v_start_time);
                    v_datetime_string := v_datetime_string || 'SS';
                END IF; -- minute
            END IF; -- day
        END IF; -- month
    END IF; -- year

    v_partition_time_array := array_append(v_partition_time_array, v_base_timestamp);
    LOOP
        -- If current loop value is less than or equal to the value of the max premake, add time to array.
        IF (v_base_timestamp + (v_time_interval * v_count)) < (CURRENT_TIMESTAMP + (v_time_interval * p_premake)) THEN
            BEGIN
                v_partition_time := (v_base_timestamp + (v_time_interval * v_count))::timestamp;
                v_partition_time_array := array_append(v_partition_time_array, v_partition_time);
            EXCEPTION WHEN datetime_field_overflow THEN
                RAISE WARNING 'Attempted partition time interval is outside PostgreSQL''s supported time range. 
                    Child partition creation after time % skipped', v_partition_time;
                v_step_overflow_id := add_step(v_job_id, 'Attempted partition time interval is outside PostgreSQL''s supported time range.');
                PERFORM update_step(v_step_overflow_id, 'CRITICAL', 'Child partition creation after time '||v_partition_time||' skipped');
                CONTINUE;
            END;
        ELSE
            EXIT; -- all needed partitions added to array. Exit the loop.
        END IF;
        v_count := v_count + 1;
    END LOOP;

    INSERT INTO @extschema@.part_config (
        parent_table
        , type
        , part_interval
        , control
        , premake
        , constraint_cols
        , datetime_string
        , use_run_maintenance
        , inherit_fk
        , jobmon) 
    VALUES (
        p_parent_table
        , p_type
        , v_time_interval
        , p_control
        , p_premake
        , p_constraint_cols
        , v_datetime_string
        , v_run_maint
        , p_inherit_fk
        , p_jobmon);
    v_last_partition_created := @extschema@.create_partition_time(p_parent_table, v_partition_time_array, false);

    IF v_last_partition_created = false THEN 
        -- This can happen with subpartitioning when future or past partitions prevent child creation because they're out of range of the parent
        -- First see if this parent is a subpartition managed by pg_partman
        WITH top_oid AS (
            SELECT i.inhparent AS top_parent_oid
            FROM pg_catalog.pg_inherits i
            JOIN pg_catalog.pg_class c ON c.oid = i.inhrelid
            JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
            WHERE n.nspname||'.'||c.relname = p_parent_table 
        ) SELECT n.nspname||'.'||c.relname
        INTO v_top_parent
        FROM pg_catalog.pg_class c
        JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
        JOIN top_oid t ON c.oid = t.top_parent_oid
        JOIN @extschema@.part_config p ON p.parent_table = n.nspname||'.'||c.relname;
        IF v_top_parent IS NOT NULL THEN
            -- If so create the lowest possible partition that is within the boundary of the parent
            v_time_position := (length(p_parent_table) - position('p_' in reverse(p_parent_table))) + 2;
            v_parent_partition_timestamp := to_timestamp(substring(p_parent_table from v_time_position), v_datetime_string);
            IF v_base_timestamp >= v_parent_partition_timestamp THEN
                WHILE v_base_timestamp >= v_parent_partition_timestamp LOOP
                    v_base_timestamp := v_base_timestamp - v_time_interval;
                END LOOP;
                v_base_timestamp := v_base_timestamp + v_time_interval; -- add one back since while loop set it one lower than is needed
            ELSIF v_base_timestamp < v_parent_partition_timestamp THEN
                WHILE v_base_timestamp < v_parent_partition_timestamp LOOP
                    v_base_timestamp := v_base_timestamp + v_time_interval;
                END LOOP;
                -- Don't need to remove one since new starting time will fit in top parent interval
            END IF;
            v_partition_time_array := NULL;
            v_partition_time_array := array_append(v_partition_time_array, v_base_timestamp);
            v_last_partition_created := @extschema@.create_partition_time(p_parent_table, v_partition_time_array, false);
        ELSE
            -- Currently unknown edge case if code gets here
            RAISE EXCEPTION 'No child tables created. Unexpected edge case encountered. Please report this error to author with conditions that led to it.';
        END IF; 
    END IF;

    IF v_jobmon_schema IS NOT NULL THEN
        PERFORM update_step(v_step_id, 'OK', 'Time partitions premade: '||p_premake);
    END IF;
END IF;

IF p_type = 'id-static' OR p_type = 'id-dynamic' THEN
    v_id_interval := p_interval::bigint;
    IF v_id_interval <= 1 THEN
        RAISE EXCEPTION 'Interval for serial partitioning must be greater than 1';
    END IF;

    -- Check if parent table is a subpartition of an already existing id partition set managed by pg_partman. 
    WHILE v_higher_parent IS NOT NULL LOOP -- initially set in DECLARE
        WITH top_oid AS (
            SELECT i.inhparent AS top_parent_oid
            FROM pg_catalog.pg_inherits i
            JOIN pg_catalog.pg_class c ON c.oid = i.inhrelid
            JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
            WHERE n.nspname||'.'||c.relname = v_higher_parent
        ) SELECT n.nspname||'.'||c.relname
        INTO v_higher_parent
        FROM pg_catalog.pg_class c
        JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
        JOIN top_oid t ON c.oid = t.top_parent_oid
        JOIN @extschema@.part_config p ON p.parent_table = n.nspname||'.'||c.relname
        WHERE p.type = 'id-static' OR p.type = 'id-dynamic';

        IF v_higher_parent IS NOT NULL THEN
            -- v_top_parent initially set in DECLARE
            v_top_parent := v_higher_parent;
        END IF;
    END LOOP;

    -- If custom start partition is set, use that.
    -- If custom start is not set and there is already data, start partitioning with the highest current value and ensure it's grabbed from highest top parent table
    v_sql := 'SELECT COALESCE('||quote_nullable(p_start_partition::bigint)||', max('||p_control||')::bigint, 0) FROM '||v_top_parent||' LIMIT 1';
    EXECUTE v_sql INTO v_max;
    v_starting_partition_id := v_max - (v_max % v_id_interval);
    FOR i IN 0..p_premake LOOP
        -- Only make previous partitions if ID value is less than the starting value and positive (and custom start partition wasn't set)
        IF p_start_partition IS NULL AND 
            (v_starting_partition_id - (v_id_interval*i)) > 0 AND 
            (v_starting_partition_id - (v_id_interval*i)) < v_starting_partition_id 
        THEN
            v_partition_id_array = array_append(v_partition_id_array, (v_starting_partition_id - v_id_interval*i));
        END IF; 
        v_partition_id_array = array_append(v_partition_id_array, (v_id_interval*i) + v_starting_partition_id);
    END LOOP;

    INSERT INTO @extschema@.part_config (
        parent_table
        , type
        , part_interval
        , control
        , premake
        , constraint_cols
        , use_run_maintenance
        , inherit_fk
        , jobmon) 
    VALUES (
        p_parent_table
        , p_type
        , v_id_interval
        , p_control
        , p_premake
        , p_constraint_cols
        , v_run_maint
        , p_inherit_fk
        , p_jobmon);
    v_last_partition_created := @extschema@.create_partition_id(p_parent_table, v_partition_id_array, false);
    IF v_last_partition_created = false THEN
        -- This can happen with subpartitioning when future or past partitions prevent child creation because they're out of range of the parent
        -- See if it's actually a subpartition of a parent id partition
        WITH top_oid AS (
            SELECT i.inhparent AS top_parent_oid
            FROM pg_catalog.pg_inherits i
            JOIN pg_catalog.pg_class c ON c.oid = i.inhrelid
            JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
            WHERE n.nspname||'.'||c.relname = p_parent_table 
        ) SELECT n.nspname||'.'||c.relname
        INTO v_top_parent
        FROM pg_catalog.pg_class c
        JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
        JOIN top_oid t ON c.oid = t.top_parent_oid
        JOIN @extschema@.part_config p ON p.parent_table = n.nspname||'.'||c.relname
        WHERE p.type = 'id-static' OR p.type = 'id-dynamic';
        IF v_top_parent IS NOT NULL THEN
            -- Create the lowest possible partition that is within the boundary of the parent
            v_id_position := (length(p_parent_table) - position('p_' in reverse(p_parent_table))) + 2;
            v_parent_partition_id = substring(p_parent_table from v_id_position)::bigint;
            IF v_starting_partition_id >= v_parent_partition_id THEN
                WHILE v_starting_partition_id >= v_parent_partition_id LOOP
                    v_starting_partition_id := v_starting_partition_id - v_id_interval;
                END LOOP;
                v_starting_partition_id := v_starting_partition_id + v_id_interval; -- add one back since while loop set it one lower than is needed
            ELSIF v_starting_partition_id < v_parent_partition_id THEN
                WHILE v_starting_partition_id < v_parent_partition_id LOOP
                    v_starting_partition_id := v_starting_partition_id + v_id_interval;
                END LOOP;
                -- Don't need to remove one since new starting id will fit in top parent interval
            END IF;
            v_partition_id_array = NULL;
            v_partition_id_array = array_append(v_partition_id_array, v_starting_partition_id);
            v_last_partition_created := @extschema@.create_partition_id(p_parent_table, v_partition_id_array, false);
        ELSE
            -- Currently unknown edge case if code gets here
            RAISE EXCEPTION 'No child tables created. Unexpected edge case encountered. Please report this error to author with conditions that led to it.';
        END IF;
    END IF;
END IF;

IF v_jobmon_schema IS NOT NULL THEN
    v_step_id := add_step(v_job_id, 'Creating partition function');
END IF;
IF p_type = 'time-static' OR p_type = 'time-dynamic' OR p_type = 'time-custom' THEN
    PERFORM @extschema@.create_function_time(p_parent_table);
    IF v_jobmon_schema IS NOT NULL THEN
        PERFORM update_step(v_step_id, 'OK', 'Time function created');
    END IF;
ELSIF p_type = 'id-static' OR p_type = 'id-dynamic' THEN
    PERFORM @extschema@.create_function_id(p_parent_table);  
    IF v_jobmon_schema IS NOT NULL THEN
        PERFORM update_step(v_step_id, 'OK', 'ID function created');
    END IF;
END IF;

IF v_jobmon_schema IS NOT NULL THEN
    v_step_id := add_step(v_job_id, 'Creating partition trigger');
END IF;
PERFORM @extschema@.create_trigger(p_parent_table);

IF v_jobmon_schema IS NOT NULL THEN
    PERFORM update_step(v_step_id, 'OK', 'Done');
    IF v_step_overflow_id IS NOT NULL THEN
        PERFORM fail_job(v_job_id);
    ELSE
        PERFORM close_job(v_job_id);
    END IF;
    EXECUTE 'SELECT set_config(''search_path'','''||v_old_search_path||''',''false'')';
END IF;

v_success := true;

RETURN v_success;

EXCEPTION
    WHEN OTHERS THEN
        IF v_jobmon_schema IS NOT NULL THEN
            IF v_job_id IS NULL THEN
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_job(''PARTMAN CREATE PARENT: '||p_parent_table||''')' INTO v_job_id;
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_step('||v_job_id||', ''Partition creation for table '||p_parent_table||' failed'')' INTO v_step_id;
            ELSIF v_step_id IS NULL THEN
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_step('||v_job_id||', ''EXCEPTION before first step logged'')' INTO v_step_id;
            END IF;
            EXECUTE 'SELECT '||v_jobmon_schema||'.update_step('||v_step_id||', ''CRITICAL'', ''ERROR: '||coalesce(SQLERRM,'unknown')||''')';
            EXECUTE 'SELECT '||v_jobmon_schema||'.fail_job('||v_job_id||')';
        END IF;
        RAISE EXCEPTION '%', SQLERRM;
END
$$;


/*
 * Create the trigger function for the parent table of a time-based partition set
 */
CREATE FUNCTION create_function_time(p_parent_table text) RETURNS void
    LANGUAGE plpgsql SECURITY DEFINER
    AS $$
DECLARE

v_control                       text;
v_count                         int;
v_current_partition_name        text;
v_current_partition_timestamp   timestamptz;
v_datetime_string               text;
v_final_partition_timestamp     timestamptz;
v_function_name                 text;
v_job_id                        bigint;
v_jobmon                        boolean;
v_jobmon_schema                 text;
v_old_search_path               text;
v_new_length                    int;
v_next_partition_name           text;
v_next_partition_timestamp      timestamptz;
v_parent_schema                 text;
v_parent_tablename              text;
v_part_interval                 interval;
v_premake                       int;
v_prev_partition_name           text;
v_prev_partition_timestamp      timestamptz;
v_step_id                       bigint;
v_trig_func                     text;
v_type                          text;

BEGIN

SELECT type
    , part_interval::interval
    , control
    , premake
    , datetime_string
    , jobmon
INTO v_type
    , v_part_interval
    , v_control
    , v_premake
    , v_datetime_string
    , v_jobmon
FROM @extschema@.part_config 
WHERE parent_table = p_parent_table
AND (type = 'time-static' OR type = 'time-dynamic' OR type = 'time-custom');

IF NOT FOUND THEN
    RAISE EXCEPTION 'ERROR: no config found for %', p_parent_table;
END IF;

IF v_jobmon THEN
    SELECT nspname INTO v_jobmon_schema FROM pg_namespace n, pg_extension e WHERE e.extname = 'pg_jobmon' AND e.extnamespace = n.oid;
    IF v_jobmon_schema IS NOT NULL THEN
        SELECT current_setting('search_path') INTO v_old_search_path;
        EXECUTE 'SELECT set_config(''search_path'',''@extschema@,'||v_jobmon_schema||''',''false'')';
    END IF;
END IF;

IF v_jobmon_schema IS NOT NULL THEN
    v_job_id := add_job('PARTMAN CREATE FUNCTION: '||p_parent_table);
    v_step_id := add_step(v_job_id, 'Creating partition function for table '||p_parent_table);
END IF;

SELECT schemaname, tablename INTO v_parent_schema, v_parent_tablename FROM pg_tables WHERE schemaname ||'.'|| tablename = p_parent_table;

v_function_name := @extschema@.check_name_length(v_parent_tablename, v_parent_schema, '_part_trig_func', FALSE);

IF v_type = 'time-static' THEN
    CASE
        WHEN v_part_interval = '15 mins' THEN
            v_current_partition_timestamp := date_trunc('hour', CURRENT_TIMESTAMP) + 
                '15min'::interval * floor(date_part('minute', CURRENT_TIMESTAMP) / 15.0);
        WHEN v_part_interval = '30 mins' THEN
            v_current_partition_timestamp := date_trunc('hour', CURRENT_TIMESTAMP) + 
                '30min'::interval * floor(date_part('minute', CURRENT_TIMESTAMP) / 30.0);
        WHEN v_part_interval = '1 hour' THEN
            v_current_partition_timestamp := date_trunc('hour', CURRENT_TIMESTAMP);
         WHEN v_part_interval = '1 day' THEN
            v_current_partition_timestamp := date_trunc('day', CURRENT_TIMESTAMP);
        WHEN v_part_interval = '1 week' THEN
            v_current_partition_timestamp := date_trunc('week', CURRENT_TIMESTAMP);
        WHEN v_part_interval = '1 month' THEN
            v_current_partition_timestamp := date_trunc('month', CURRENT_TIMESTAMP);
        -- Type time-static plus this interval is the special quarterly interval 
        WHEN v_part_interval = '3 months' THEN
            v_current_partition_timestamp := date_trunc('quarter', CURRENT_TIMESTAMP);
        WHEN v_part_interval = '1 year' THEN
            v_current_partition_timestamp := date_trunc('year', CURRENT_TIMESTAMP);
    END CASE;

    v_current_partition_name := @extschema@.check_name_length(v_parent_tablename, v_parent_schema, to_char(v_current_partition_timestamp, v_datetime_string), TRUE); 
    v_next_partition_timestamp := v_current_partition_timestamp + v_part_interval::interval;

    v_trig_func := 'CREATE OR REPLACE FUNCTION '||v_function_name||'() RETURNS trigger LANGUAGE plpgsql AS $t$ 
        BEGIN 
        IF TG_OP = ''INSERT'' THEN 
            IF NEW.'||v_control||' >= '||quote_literal(v_current_partition_timestamp)||' AND NEW.'||v_control||' < '||quote_literal(v_next_partition_timestamp)|| ' THEN ';
        SELECT count(*) INTO v_count FROM pg_catalog.pg_tables WHERE schemaname ||'.'||tablename = v_current_partition_name;
        IF v_count > 0 THEN
            v_trig_func := v_trig_func || '
                INSERT INTO '||v_current_partition_name||' VALUES (NEW.*); ';
        ELSE
            v_trig_func := v_trig_func || '
                -- Child table for current values does not exist in this partition set, so write to parent
                RETURN NEW;';
        END IF;
    FOR i IN 1..v_premake LOOP
        v_prev_partition_timestamp := v_current_partition_timestamp - (v_part_interval::interval * i);
        v_next_partition_timestamp := v_current_partition_timestamp + (v_part_interval::interval * i);
        v_final_partition_timestamp := v_next_partition_timestamp + (v_part_interval::interval);
        v_prev_partition_name := @extschema@.check_name_length(v_parent_tablename, v_parent_schema, to_char(v_prev_partition_timestamp, v_datetime_string), TRUE);
        v_next_partition_name := @extschema@.check_name_length(v_parent_tablename, v_parent_schema, to_char(v_next_partition_timestamp, v_datetime_string), TRUE);

        -- Check that child table exist before making a rule to insert to them.
        -- Handles edge case of changing premake immediately after running create_parent(). 
        SELECT count(*) INTO v_count FROM pg_catalog.pg_tables WHERE schemaname ||'.'||tablename = v_prev_partition_name;
        IF v_count > 0 THEN
            v_trig_func := v_trig_func ||'
            ELSIF NEW.'||v_control||' >= '||quote_literal(v_prev_partition_timestamp)||' AND NEW.'||v_control||' < '||
                    quote_literal(v_prev_partition_timestamp + v_part_interval::interval)|| ' THEN 
                INSERT INTO '||v_prev_partition_name||' VALUES (NEW.*);';
        END IF;
        SELECT count(*) INTO v_count FROM pg_catalog.pg_tables WHERE schemaname ||'.'||tablename = v_next_partition_name;
        IF v_count > 0 THEN
            v_trig_func := v_trig_func ||' 
            ELSIF NEW.'||v_control||' >= '||quote_literal(v_next_partition_timestamp)||' AND NEW.'||v_control||' < '||
                quote_literal(v_final_partition_timestamp)|| ' THEN 
                INSERT INTO '||v_next_partition_name||' VALUES (NEW.*);';
        END IF;

    END LOOP;
    v_trig_func := v_trig_func ||' 
            ELSE 
                RETURN NEW; 
            END IF; 
        END IF; 
        RETURN NULL; 
        END $t$;';

    EXECUTE v_trig_func;

    IF v_jobmon_schema IS NOT NULL THEN
        PERFORM update_step(v_step_id, 'OK', 'Added function for current time interval: '||
            v_current_partition_timestamp||' to '||(v_final_partition_timestamp-'1sec'::interval));
    END IF;

ELSIF v_type = 'time-dynamic' THEN

    v_trig_func := 'CREATE OR REPLACE FUNCTION '||v_function_name||'() RETURNS trigger LANGUAGE plpgsql AS $t$ 
        DECLARE
            v_count                 int;
            v_partition_name        text;
            v_partition_timestamp   timestamptz;
        BEGIN 
        IF TG_OP = ''INSERT'' THEN 
            ';
        CASE
            WHEN v_part_interval = '15 mins' THEN 
                v_trig_func := v_trig_func||'v_partition_timestamp := date_trunc(''hour'', NEW.'||v_control||') + 
                    ''15min''::interval * floor(date_part(''minute'', NEW.'||v_control||') / 15.0);';
            WHEN v_part_interval = '30 mins' THEN
                v_trig_func := v_trig_func||'v_partition_timestamp := date_trunc(''hour'', NEW.'||v_control||') + 
                    ''30min''::interval * floor(date_part(''minute'', NEW.'||v_control||') / 30.0);';
            WHEN v_part_interval = '1 hour' THEN
                v_trig_func := v_trig_func||'v_partition_timestamp := date_trunc(''hour'', NEW.'||v_control||');';
             WHEN v_part_interval = '1 day' THEN
                v_trig_func := v_trig_func||'v_partition_timestamp := date_trunc(''day'', NEW.'||v_control||');';
            WHEN v_part_interval = '1 week' THEN
                v_trig_func := v_trig_func||'v_partition_timestamp := date_trunc(''week'', NEW.'||v_control||');';
            WHEN v_part_interval = '1 month' THEN
                v_trig_func := v_trig_func||'v_partition_timestamp := date_trunc(''month'', NEW.'||v_control||');';
            WHEN v_part_interval = '3 months' THEN
                v_trig_func := v_trig_func||'v_partition_timestamp := date_trunc(''quarter'', NEW.'||v_control||');';
            WHEN v_part_interval = '1 year' THEN
                v_trig_func := v_trig_func||'v_partition_timestamp := date_trunc(''year'', NEW.'||v_control||');';
        END CASE;
        v_trig_func := v_trig_func||'
            v_partition_name := @extschema@.check_name_length('''||v_parent_tablename||''', '''||v_parent_schema||''', to_char(v_partition_timestamp, '||quote_literal(v_datetime_string)||'), TRUE);
            SELECT count(*) INTO v_count FROM pg_tables WHERE schemaname ||''.''|| tablename = v_partition_name;
            IF v_count > 0 THEN 
                EXECUTE ''INSERT INTO ''||v_partition_name||'' VALUES($1.*)'' USING NEW;
            ELSE
                RETURN NEW;
            END IF;
        END IF;
        
        RETURN NULL; 
        END $t$;';

    EXECUTE v_trig_func;

    IF v_jobmon_schema IS NOT NULL THEN
        PERFORM update_step(v_step_id, 'OK', 'Added function for dynamic time table: '||p_parent_table);
    END IF;

ELSIF v_type = 'time-custom' THEN

    v_trig_func := 'CREATE OR REPLACE FUNCTION '||v_function_name||'() RETURNS trigger LANGUAGE plpgsql AS $t$ 
        DECLARE
            v_child_table       text;
            v_count             int; 
        BEGIN 

        SELECT child_table INTO v_child_table
        FROM @extschema@.custom_time_partitions 
        WHERE partition_range @> NEW.'||v_control||' 
        AND parent_table = '||quote_literal(p_parent_table)||';

        SELECT count(*) INTO v_count FROM pg_tables WHERE schemaname ||''.''|| tablename = v_child_table;
        IF v_count > 0 THEN
            EXECUTE ''INSERT INTO ''||v_child_table||'' VALUES ($1.*)'' USING NEW;
        ELSE
            RETURN NEW;
        END IF;

        RETURN NULL; 
        END $t$;';

    EXECUTE v_trig_func;

    IF v_jobmon_schema IS NOT NULL THEN
        PERFORM update_step(v_step_id, 'OK', 'Added function for custom time table: '||p_parent_table);
    END IF;

ELSE
    RAISE EXCEPTION 'ERROR: Invalid time partitioning type given: %', v_type;
END IF;

IF v_jobmon_schema IS NOT NULL THEN
    PERFORM close_job(v_job_id);
    EXECUTE 'SELECT set_config(''search_path'','''||v_old_search_path||''',''false'')';
END IF;

EXCEPTION
    WHEN OTHERS THEN
        IF v_jobmon_schema IS NOT NULL THEN
            IF v_job_id IS NULL THEN
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_job(''PARTMAN CREATE FUNCTION: '||p_parent_table||''')' INTO v_job_id;
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_step('||v_job_id||', ''EXCEPTION before job logging started'')' INTO v_step_id;
            ELSIF v_step_id IS NULL THEN
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_step('||v_job_id||', ''EXCEPTION before first step logged'')' INTO v_step_id;
            END IF;
            EXECUTE 'SELECT '||v_jobmon_schema||'.update_step('||v_step_id||', ''CRITICAL'', ''ERROR: '||coalesce(SQLERRM,'unknown')||''')';
            EXECUTE 'SELECT '||v_jobmon_schema||'.fail_job('||v_job_id||')';
        END IF;
        RAISE EXCEPTION '%', SQLERRM;
END
$$;


/*
 * Create the trigger function for the parent table of an id-based partition set
 */
CREATE FUNCTION create_function_id(p_parent_table text) RETURNS void
    LANGUAGE plpgsql SECURITY DEFINER
    AS $$
DECLARE

v_control                       text;
v_count                         int;
v_current_partition_name        text;
v_current_partition_id          bigint;
v_datetime_string               text;
v_final_partition_id            bigint;
v_function_name                 text;
v_higher_parent                 text := p_parent_table;
v_id_position                   int;
v_job_id                        bigint;
v_jobmon                        text;
v_jobmon_schema                 text;
v_last_partition                text;
v_max                           bigint;
v_next_partition_id             bigint;
v_next_partition_name           text;
v_old_search_path               text;
v_parent_schema                 text;
v_parent_tablename              text;
v_part_interval                 bigint;
v_premake                       int;
v_prev_partition_id             bigint;
v_prev_partition_name           text;
v_run_maint                     boolean;
v_step_id                       bigint;
v_top_parent                    text := p_parent_table;
v_trig_func                     text;
v_type                          text;

BEGIN

SELECT type
    , part_interval::bigint
    , control
    , premake
    , use_run_maintenance
    , jobmon
INTO v_type
    , v_part_interval
    , v_control
    , v_premake
    , v_run_maint
    , v_jobmon
FROM @extschema@.part_config 
WHERE parent_table = p_parent_table
AND (type = 'id-static' OR type = 'id-dynamic');

IF NOT FOUND THEN
    RAISE EXCEPTION 'ERROR: no config found for %', p_parent_table;
END IF;

SELECT show_partitions INTO v_last_partition FROM @extschema@.show_partitions(p_parent_table, 'DESC') LIMIT 1;

IF v_jobmon THEN
    SELECT nspname INTO v_jobmon_schema FROM pg_catalog.pg_namespace n, pg_catalog.pg_extension e WHERE e.extname = 'pg_jobmon' AND e.extnamespace = n.oid;
    IF v_jobmon_schema IS NOT NULL THEN
        SELECT current_setting('search_path') INTO v_old_search_path;
        EXECUTE 'SELECT set_config(''search_path'',''@extschema@,'||v_jobmon_schema||''',''false'')';
    END IF;
END IF;

IF v_jobmon_schema IS NOT NULL THEN
    v_job_id := add_job('PARTMAN CREATE FUNCTION: '||p_parent_table);
    v_step_id := add_step(v_job_id, 'Creating partition function for table '||p_parent_table);
END IF;

SELECT schemaname, tablename INTO v_parent_schema, v_parent_tablename FROM pg_catalog.pg_tables WHERE schemaname ||'.'|| tablename = p_parent_table;
v_function_name := @extschema@.check_name_length(v_parent_tablename, v_parent_schema, '_part_trig_func', FALSE);

IF v_type = 'id-static' THEN
    -- Get the highest level top parent if multi-level partitioned in order to get proper max() value below
    WHILE v_higher_parent IS NOT NULL LOOP -- initially set in DECLARE
        WITH top_oid AS (
            SELECT i.inhparent AS top_parent_oid
            FROM pg_catalog.pg_inherits i
            JOIN pg_catalog.pg_class c ON c.oid = i.inhrelid
            JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
            WHERE n.nspname||'.'||c.relname = v_higher_parent
        ) SELECT n.nspname||'.'||c.relname
        INTO v_higher_parent
        FROM pg_catalog.pg_class c
        JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
        JOIN top_oid t ON c.oid = t.top_parent_oid
        JOIN @extschema@.part_config p ON p.parent_table = n.nspname||'.'||c.relname
        WHERE p.type = 'id-static' OR p.type = 'id-dynamic';

        IF v_higher_parent IS NOT NULL THEN
            -- initially set in DECLARE
            v_top_parent := v_higher_parent;
        END IF;

    END LOOP;

    EXECUTE 'SELECT COALESCE(max('||v_control||'), 0) FROM '||v_top_parent INTO v_max;
    v_current_partition_id = v_max - (v_max % v_part_interval);
    v_next_partition_id := v_current_partition_id + v_part_interval;
    v_current_partition_name := @extschema@.check_name_length(v_parent_tablename, v_parent_schema, v_current_partition_id::text, TRUE);

    v_trig_func := 'CREATE OR REPLACE FUNCTION '||v_function_name||'() RETURNS trigger LANGUAGE plpgsql AS $t$ 
        DECLARE
            v_current_partition_id  bigint;
            v_last_partition        text := '||quote_literal(v_last_partition)||';
            v_id_position           int;
            v_next_partition_id     bigint;
            v_next_partition_name   text;         
            v_partition_created     boolean;
        BEGIN
        IF TG_OP = ''INSERT'' THEN 
            IF NEW.'||v_control||' >= '||v_current_partition_id||' AND NEW.'||v_control||' < '||v_next_partition_id|| ' THEN ';
            SELECT count(*) INTO v_count FROM pg_catalog.pg_tables WHERE schemaname ||'.'||tablename = v_current_partition_name;
            IF v_count > 0 THEN
                v_trig_func := v_trig_func || ' 
                INSERT INTO '||v_current_partition_name||' VALUES (NEW.*); ';
            ELSE
                v_trig_func := v_trig_func || '
                -- Child table for current values does not exist in this partition set, so write to parent
                RETURN NEW;';
            END IF;

        FOR i IN 1..v_premake LOOP
            v_prev_partition_id := v_current_partition_id - (v_part_interval * i);
            v_next_partition_id := v_current_partition_id + (v_part_interval * i);
            v_final_partition_id := v_next_partition_id + v_part_interval;
            v_prev_partition_name := @extschema@.check_name_length(v_parent_tablename, v_parent_schema, v_prev_partition_id::text, TRUE);
            v_next_partition_name := @extschema@.check_name_length(v_parent_tablename, v_parent_schema, v_next_partition_id::text, TRUE);
            
            -- Check that child table exist before making a rule to insert to them.
            -- Handles edge case of changing premake immediately after running create_parent(). 
            SELECT count(*) INTO v_count FROM pg_catalog.pg_tables WHERE schemaname ||'.'||tablename = v_prev_partition_name;
            IF v_count > 0 THEN
                -- Only handle previous partitions if they're starting above zero
                IF v_prev_partition_id >= 0 THEN
                    v_trig_func := v_trig_func ||'
            ELSIF NEW.'||v_control||' >= '||v_prev_partition_id||' AND NEW.'||v_control||' < '||v_prev_partition_id + v_part_interval|| ' THEN 
                INSERT INTO '||v_prev_partition_name||' VALUES (NEW.*); ';
                END IF;
            END IF;
            
            SELECT count(*) INTO v_count FROM pg_catalog.pg_tables WHERE schemaname ||'.'||tablename = v_next_partition_name;
            IF v_count > 0 THEN
                v_trig_func := v_trig_func ||'
            ELSIF NEW.'||v_control||' >= '||v_next_partition_id||' AND NEW.'||v_control||' < '||v_final_partition_id|| ' THEN 
                INSERT INTO '||v_next_partition_name||' VALUES (NEW.*);'; 
            END IF;
        END LOOP;
        v_trig_func := v_trig_func ||'
            ELSE
                RETURN NEW;
            END IF;';

        IF v_run_maint IS FALSE THEN
            v_trig_func := v_trig_func ||'
            v_current_partition_id := NEW.'||v_control||' - (NEW.'||v_control||' % '||v_part_interval||');
            IF (NEW.'||v_control||' % '||v_part_interval||') > ('||v_part_interval||' / 2) THEN
                v_id_position := (length(v_last_partition) - position(''p_'' in reverse(v_last_partition))) + 2;
                v_next_partition_id := (substring(v_last_partition from v_id_position)::bigint) + '||v_part_interval||';
                WHILE ((v_next_partition_id - v_current_partition_id) / '||v_part_interval||') <= '||v_premake||' LOOP 
                    v_partition_created := @extschema@.create_partition_id('||quote_literal(p_parent_table)||', ARRAY[v_next_partition_id]);
                    IF v_partition_created THEN
                        PERFORM @extschema@.create_function_id('||quote_literal(p_parent_table)||');
                        PERFORM @extschema@.apply_constraints('||quote_literal(p_parent_table)||');
                    END IF;
                    v_next_partition_id := v_next_partition_id + '||v_part_interval||';
                END LOOP;
            END IF;';
        END IF;

        v_trig_func := v_trig_func ||'
        END IF; 
        RETURN NULL; 
        END $t$;';

    EXECUTE v_trig_func;

    IF v_jobmon_schema IS NOT NULL THEN
        PERFORM update_step(v_step_id, 'OK', 'Added function for current id interval: '||v_current_partition_id||' to '||v_final_partition_id-1);
    END IF;

ELSIF v_type = 'id-dynamic' THEN
    -- The return inside the partition creation check is there to keep really high ID values from creating new partitions.
    v_trig_func := 'CREATE OR REPLACE FUNCTION '||v_function_name||'() RETURNS trigger LANGUAGE plpgsql AS $t$ 
        DECLARE
            v_count                     int;
            v_current_partition_id      bigint;
            v_current_partition_name    text;
            v_id_position               int;
            v_last_partition            text := '||quote_literal(v_last_partition)||';
            v_last_partition_id         bigint;
            v_next_partition_id         bigint;
            v_next_partition_name       text;   
            v_partition_created         boolean;
        BEGIN 
        IF TG_OP = ''INSERT'' THEN 
            v_current_partition_id := NEW.'||v_control||' - (NEW.'||v_control||' % '||v_part_interval||');
            v_current_partition_name := @extschema@.check_name_length('''||v_parent_tablename||''', '''||v_parent_schema||''', v_current_partition_id::text, TRUE);
            SELECT count(*) INTO v_count FROM pg_tables WHERE schemaname ||''.''|| tablename = v_current_partition_name;
            IF v_count > 0 THEN 
                EXECUTE ''INSERT INTO ''||v_current_partition_name||'' VALUES($1.*)'' USING NEW;
            ELSE
                RETURN NEW;
            END IF;';

       IF v_run_maint IS FALSE THEN
            v_trig_func := v_trig_func ||'
            IF (NEW.'||v_control||' % '||v_part_interval||') > ('||v_part_interval||' / 2) THEN
                v_id_position := (length(v_last_partition) - position(''p_'' in reverse(v_last_partition))) + 2;
                v_last_partition_id = substring(v_last_partition from v_id_position)::bigint;
                v_next_partition_id := v_last_partition_id + '||v_part_interval||';
                IF NEW.'||v_control||' >= v_next_partition_id THEN
                    RETURN NEW;
                END IF;
                WHILE ((v_next_partition_id - v_current_partition_id) / '||v_part_interval||') <= '||v_premake||' LOOP 
                    v_partition_created := @extschema@.create_partition_id('||quote_literal(p_parent_table)||', ARRAY[v_next_partition_id]);
                    IF v_partition_created THEN
                        PERFORM @extschema@.create_function_id('||quote_literal(p_parent_table)||');
                        PERFORM @extschema@.apply_constraints('||quote_literal(p_parent_table)||');
                    END IF;
                    v_next_partition_id := v_next_partition_id + '||v_part_interval||';
                END LOOP;
            END IF;';
        END IF;

        v_trig_func := v_trig_func ||'
        END IF;
        RETURN NULL; 
        END $t$;';

    EXECUTE v_trig_func;

    IF v_jobmon_schema IS NOT NULL THEN
        PERFORM update_step(v_step_id, 'OK', 'Added function for dynamic id table: '||p_parent_table);
    END IF;

ELSE
    RAISE EXCEPTION 'ERROR: Invalid id partitioning type given: %', v_type;
END IF;

IF v_jobmon_schema IS NOT NULL THEN
    PERFORM close_job(v_job_id);
    EXECUTE 'SELECT set_config(''search_path'','''||v_old_search_path||''',''false'')';
END IF;

EXCEPTION
    WHEN OTHERS THEN
        IF v_jobmon_schema IS NOT NULL THEN
            IF v_job_id IS NULL THEN
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_job(''PARTMAN CREATE FUNCTION: '||p_parent_table||''')' INTO v_job_id;
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_step('||v_job_id||', ''Partition function maintenance for table '||p_parent_table||' failed'')' INTO v_step_id;
            ELSIF v_step_id IS NULL THEN
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_step('||v_job_id||', ''EXCEPTION before first step logged'')' INTO v_step_id;
            END IF;
            EXECUTE 'SELECT '||v_jobmon_schema||'.update_step('||v_step_id||', ''CRITICAL'', ''ERROR: '||coalesce(SQLERRM,'unknown')||''')';
            EXECUTE 'SELECT '||v_jobmon_schema||'.fail_job('||v_job_id||')';
        END IF;
        RAISE EXCEPTION '%', SQLERRM;
END
$$;


/*
 * Populate the child table(s) of a time-based partition set with old data from the original parent
 */
CREATE OR REPLACE FUNCTION partition_data_time(p_parent_table text, p_batch_count int DEFAULT 1, p_batch_interval interval DEFAULT NULL, p_lock_wait numeric DEFAULT 0, p_order text DEFAULT 'ASC') RETURNS bigint
    LANGUAGE plpgsql SECURITY DEFINER
    AS $$
DECLARE

v_control                   text;
v_datetime_string           text;
v_current_partition_name       text;
v_max_partition_timestamp   timestamp;
v_last_partition            text;
v_lock_iter                 int := 1;
v_lock_obtained             boolean := FALSE;
v_min_partition_timestamp   timestamp;
v_parent_schema             text;
v_parent_tablename          text;
v_part_interval             interval;
v_partition_suffix          text;
v_partition_timestamp       timestamp[];
v_quarter                   text;
v_rowcount                  bigint;
v_sql                       text;
v_start_control             timestamp;
v_time_position             int;
v_total_rows                bigint := 0;
v_type                      text;
v_year                      text;

BEGIN

SELECT type
    , part_interval::interval
    , control
    , datetime_string
INTO v_type
    , v_part_interval
    , v_control
    , v_datetime_string
FROM @extschema@.part_config 
WHERE parent_table = p_parent_table
AND (type = 'time-static' OR type = 'time-dynamic' OR type = 'time-custom');
IF NOT FOUND THEN
    RAISE EXCEPTION 'ERROR: no config found for %', p_parent_table;
END IF;

IF p_batch_interval IS NULL OR p_batch_interval > v_part_interval THEN
    p_batch_interval := v_part_interval;
END IF;

SELECT show_partitions INTO v_last_partition FROM @extschema@.show_partitions(p_parent_table, 'DESC') LIMIT 1;

FOR i IN 1..p_batch_count LOOP

    IF p_order = 'ASC' THEN
        EXECUTE 'SELECT min('||v_control||') FROM ONLY '||p_parent_table INTO v_start_control;
    ELSIF p_order = 'DESC' THEN
        EXECUTE 'SELECT max('||v_control||') FROM ONLY '||p_parent_table INTO v_start_control;
    ELSE
        RAISE EXCEPTION 'Invalid value for p_order. Must be ASC or DESC';
    END IF;

    IF v_start_control IS NULL THEN
        EXIT;
    END IF;

    IF v_type = 'time-static' OR v_type = 'time-dynamic' THEN
        CASE
            WHEN v_part_interval = '15 mins' THEN
                v_min_partition_timestamp := date_trunc('hour', v_start_control) + 
                    '15min'::interval * floor(date_part('minute', v_start_control) / 15.0);
            WHEN v_part_interval = '30 mins' THEN
                v_min_partition_timestamp := date_trunc('hour', v_start_control) + 
                    '30min'::interval * floor(date_part('minute', v_start_control) / 30.0);
            WHEN v_part_interval = '1 hour' THEN
                v_min_partition_timestamp := date_trunc('hour', v_start_control);
            WHEN v_part_interval = '1 day' THEN
                v_min_partition_timestamp := date_trunc('day', v_start_control);
            WHEN v_part_interval = '1 week' THEN
                v_min_partition_timestamp := date_trunc('week', v_start_control);
            WHEN v_part_interval = '1 month' THEN
                v_min_partition_timestamp := date_trunc('month', v_start_control);
            WHEN v_part_interval = '3 months' THEN
                v_min_partition_timestamp := date_trunc('quarter', v_start_control);
            WHEN v_part_interval = '1 year' THEN
                v_min_partition_timestamp := date_trunc('year', v_start_control);
        END CASE;
    ELSIF v_type = 'time-custom' THEN
        -- Keep going backwards, checking if the time interval encompases the current v_start_control value
        v_time_position := (length(v_last_partition) - position('p_' in reverse(v_last_partition))) + 2;
        v_min_partition_timestamp := to_timestamp(substring(v_last_partition from v_time_position), v_datetime_string);
        v_max_partition_timestamp := v_min_partition_timestamp + v_part_interval;
        LOOP
            IF v_start_control >= v_min_partition_timestamp AND v_start_control < v_max_partition_timestamp THEN
                EXIT;
            ELSE
                v_max_partition_timestamp := v_min_partition_timestamp;
                BEGIN
                    v_min_partition_timestamp := v_min_partition_timestamp - v_part_interval;
                EXCEPTION WHEN datetime_field_overflow THEN
                    RAISE EXCEPTION 'Attempted partition time interval is outside PostgreSQL''s supported time range. 
                        Unable to create partition with interval before timestamp % ', v_min_partition_interval;
                END;
            END IF;
        END LOOP;

    END IF;

    v_partition_timestamp := ARRAY[v_min_partition_timestamp];
    IF p_order = 'ASC' THEN
        IF (v_start_control + p_batch_interval) >= (v_min_partition_timestamp + v_part_interval) THEN
            v_max_partition_timestamp := v_min_partition_timestamp + v_part_interval;
        ELSE
            v_max_partition_timestamp := v_start_control + p_batch_interval;
        END IF;
    ELSIF p_order = 'DESC' THEN
        -- Must be greater than max value still in parent table since query below grabs < max
        v_max_partition_timestamp := v_min_partition_timestamp + v_part_interval;
        -- Make sure minimum doesn't underflow current partition minimum
        IF (v_start_control - p_batch_interval) >= v_min_partition_timestamp THEN
            v_min_partition_timestamp = v_start_control - p_batch_interval;
        END IF;
    ELSE
        RAISE EXCEPTION 'Invalid value for p_order. Must be ASC or DESC';
    END IF;

-- do some locking with timeout, if required
    IF p_lock_wait > 0  THEN
        v_lock_iter := 0;
        WHILE v_lock_iter <= 5 LOOP
            v_lock_iter := v_lock_iter + 1;
            BEGIN
                v_sql := 'SELECT * FROM ONLY ' || p_parent_table ||
                ' WHERE '||v_control||' >= '||quote_literal(v_min_partition_timestamp)||
                ' AND '||v_control||' < '||quote_literal(v_max_partition_timestamp)
                ||' FOR UPDATE NOWAIT';
                EXECUTE v_sql;
                v_lock_obtained := TRUE;
            EXCEPTION
                WHEN lock_not_available THEN
                    PERFORM pg_sleep( p_lock_wait / 5.0 );
                    CONTINUE;
            END;
            EXIT WHEN v_lock_obtained;
        END LOOP;
        IF NOT v_lock_obtained THEN
           RETURN -1;
        END IF;
    END IF;

    PERFORM @extschema@.create_partition_time(p_parent_table, v_partition_timestamp);
    -- This suffix generation code is in create_partition_time() as well
    v_partition_suffix := to_char(v_min_partition_timestamp, 'YYYY');
    IF v_part_interval < '1 year' AND v_part_interval <> '1 week' THEN 
        v_partition_suffix := v_partition_suffix ||'_'|| to_char(v_min_partition_timestamp, 'MM');
        IF v_part_interval < '1 month' AND v_part_interval <> '1 week' THEN 
            v_partition_suffix := v_partition_suffix ||'_'|| to_char(v_min_partition_timestamp, 'DD');
            IF v_part_interval < '1 day' THEN
                v_partition_suffix := v_partition_suffix || '_' || to_char(v_min_partition_timestamp, 'HH24MI');
                IF v_part_interval < '1 minute' THEN
                    v_partition_suffix := v_partition_suffix || to_char(v_min_partition_timestamp, 'SS');
                END IF; -- end < minute IF
            END IF; -- end < day IF      
        END IF; -- end < month IF
    END IF; -- end < year IF
    IF v_part_interval = '1 week' THEN
        v_partition_suffix := to_char(v_min_partition_timestamp, 'IYYY') || 'w' || to_char(v_min_partition_timestamp, 'IW');
    END IF;
    -- "Q" is ignored in to_timestamp, so handle special case
    IF v_part_interval = '3 months' AND (v_type = 'time-static' OR v_type = 'time-dynamic') THEN
        v_year := to_char(v_min_partition_timestamp, 'YYYY');
        v_quarter := to_char(v_min_partition_timestamp, 'Q');
        v_partition_suffix := v_year || 'q' || v_quarter;
    END IF;

    SELECT schemaname, tablename INTO v_parent_schema, v_parent_tablename FROM pg_catalog.pg_tables WHERE schemaname||'.'||tablename = p_parent_table;
    v_current_partition_name := @extschema@.check_name_length(v_parent_tablename, v_parent_schema, v_partition_suffix, TRUE);

    EXECUTE 'WITH partition_data AS (
            DELETE FROM ONLY '||p_parent_table||' WHERE '||v_control||' >= '||quote_literal(v_min_partition_timestamp)||
                ' AND '||v_control||' < '||quote_literal(v_max_partition_timestamp)||' RETURNING *)
            INSERT INTO '||v_current_partition_name||' SELECT * FROM partition_data';

    GET DIAGNOSTICS v_rowcount = ROW_COUNT;
    v_total_rows := v_total_rows + v_rowcount;
    IF v_rowcount = 0 THEN
        EXIT;
    END IF;

END LOOP; 

IF v_type = 'time-static' THEN
        PERFORM @extschema@.create_function_time(p_parent_table);
END IF;

RETURN v_total_rows;

END
$$;


/*
 * Populate the child table(s) of an id-based partition set with old data from the original parent
 */
CREATE OR REPLACE FUNCTION partition_data_id(p_parent_table text, p_batch_count int DEFAULT 1, p_batch_interval int DEFAULT NULL, p_lock_wait numeric DEFAULT 0, p_order text DEFAULT 'ASC') RETURNS bigint
    LANGUAGE plpgsql SECURITY DEFINER
    AS $$
DECLARE

v_control                   text;
v_current_partition_name    text;
v_lock_iter                 int := 1;
v_lock_obtained             boolean := FALSE;
v_max_partition_id          bigint;
v_min_partition_id          bigint;
v_parent_schema             text;
v_parent_tablename          text;
v_part_interval             bigint;
v_partition_id              bigint[];
v_rowcount                  bigint;
v_sql                       text;
v_start_control             bigint;
v_total_rows                bigint := 0;
v_type                      text;

BEGIN

SELECT type
    , part_interval::bigint
    , control
INTO v_type
    , v_part_interval
    , v_control
FROM @extschema@.part_config 
WHERE parent_table = p_parent_table
AND (type = 'id-static' OR type = 'id-dynamic');
IF NOT FOUND THEN
    RAISE EXCEPTION 'ERROR: no config found for %', p_parent_table;
END IF;

IF p_batch_interval IS NULL OR p_batch_interval > v_part_interval THEN
    p_batch_interval := v_part_interval;
END IF;

FOR i IN 1..p_batch_count LOOP

    IF p_order = 'ASC' THEN
        EXECUTE 'SELECT min('||v_control||') FROM ONLY '||p_parent_table INTO v_start_control;
        IF v_start_control IS NULL THEN
            EXIT;
        END IF;
        v_min_partition_id = v_start_control - (v_start_control % v_part_interval);
        v_partition_id := ARRAY[v_min_partition_id];
        -- Check if custom batch interval overflows current partition maximum
        IF (v_start_control + p_batch_interval) >= (v_min_partition_id + v_part_interval) THEN
            v_max_partition_id := v_min_partition_id + v_part_interval;
        ELSE
            v_max_partition_id := v_start_control + p_batch_interval;
        END IF;

    ELSIF p_order = 'DESC' THEN
        EXECUTE 'SELECT max('||v_control||') FROM ONLY '||p_parent_table INTO v_start_control;
        IF v_start_control IS NULL THEN
            EXIT;
        END IF;
        v_min_partition_id = v_start_control - (v_start_control % v_part_interval);
        -- Must be greater than max value still in parent table since query below grabs < max
        v_max_partition_id := v_min_partition_id + v_part_interval;
        v_partition_id := ARRAY[v_min_partition_id];
        -- Make sure minimum doesn't underflow current partition minimum
        IF (v_start_control - p_batch_interval) >= v_min_partition_id THEN
            v_min_partition_id = v_start_control - p_batch_interval;
        END IF;
    ELSE
        RAISE EXCEPTION 'Invalid value for p_order. Must be ASC or DESC';
    END IF;

    -- do some locking with timeout, if required
    IF p_lock_wait > 0  THEN
        v_lock_iter := 0;
        WHILE v_lock_iter <= 5 LOOP
            v_lock_iter := v_lock_iter + 1;
            BEGIN
                v_sql := 'SELECT * FROM ONLY ' || p_parent_table ||
                ' WHERE '||v_control||' >= '||quote_literal(v_min_partition_id)||
                ' AND '||v_control||' < '||quote_literal(v_max_partition_id)
                ||' FOR UPDATE NOWAIT';
                EXECUTE v_sql;
                v_lock_obtained := TRUE;
            EXCEPTION
                WHEN lock_not_available THEN
                    PERFORM pg_sleep( p_lock_wait / 5.0 );
                    CONTINUE;
            END;
            EXIT WHEN v_lock_obtained;
        END LOOP;
        IF NOT v_lock_obtained THEN
           RETURN -1;
        END IF;
    END IF;

    PERFORM @extschema@.create_partition_id(p_parent_table, v_partition_id);
    SELECT schemaname, tablename INTO v_parent_schema, v_parent_tablename FROM pg_catalog.pg_tables WHERE schemaname||'.'||tablename = p_parent_table;
    v_current_partition_name := @extschema@.check_name_length(v_parent_tablename, v_parent_schema, v_min_partition_id::text, TRUE);

    EXECUTE 'WITH partition_data AS (
        DELETE FROM ONLY '||p_parent_table||' WHERE '||v_control||' >= '||v_min_partition_id||
            ' AND '||v_control||' < '||v_max_partition_id||' RETURNING *)
        INSERT INTO '||v_current_partition_name||' SELECT * FROM partition_data';        

    GET DIAGNOSTICS v_rowcount = ROW_COUNT;
    v_total_rows := v_total_rows + v_rowcount;
    IF v_rowcount = 0 THEN
        EXIT;
    END IF;

END LOOP;

IF v_type = 'id-static' THEN
        PERFORM @extschema@.create_function_id(p_parent_table);
END IF;

RETURN v_total_rows;

END
$$;


/*
 * Function to manage pre-creation of the next partitions in a set.
 * Also manages dropping old partitions if the retention option is set.
 * If p_parent_table is passed, will only run run_maintenance() on that one table (no matter what the configuration table may have set for it)
 * Otherwise, will run on all tables in the config table with p_run_maintenance() set to true.
 * For large partition sets, running analyze can cause maintenance to take longer than expected. Can set p_analyze to false to avoid a forced analyze run.
 * Be aware that constraint exclusion may not work properly until an analyze on the partition set is run. 
 */
CREATE FUNCTION run_maintenance(p_parent_table text DEFAULT NULL, p_analyze boolean DEFAULT true, p_jobmon boolean DEFAULT true) RETURNS void 
    LANGUAGE plpgsql SECURITY DEFINER
    AS $$
DECLARE

v_adv_lock                      boolean;
v_create_count                  int := 0;
v_current_partition             text;
v_current_partition_id          bigint;
v_current_partition_timestamp   timestamp;
v_datetime_string               text;
v_drop_count                    int := 0;
v_id_position                   int;
v_job_id                        bigint;
v_jobmon                        boolean;
v_jobmon_schema                 text;
v_last_partition                text;
v_last_partition_created        boolean;
v_last_partition_id             bigint;
v_last_partition_timestamp      timestamp;
v_next_partition_id             bigint;
v_next_partition_timestamp      timestamp;
v_old_search_path               text;
v_premade_count                 int;
v_quarter                       text;
v_step_id                       bigint;
v_step_overflow_id              bigint;
v_step_serial_id                bigint;
v_sub_parent                    text;
v_row                           record;
v_row_sub                       record;
v_tablename                     text;
v_tables_list_sql               text;
v_time_position                 int;
v_year                          text;

BEGIN

v_adv_lock := pg_try_advisory_xact_lock(hashtext('pg_partman run_maintenance'));
IF v_adv_lock = 'false' THEN
    RAISE NOTICE 'Partman maintenance already running.';
    RETURN;
END IF;

IF p_jobmon THEN
    SELECT nspname INTO v_jobmon_schema FROM pg_catalog.pg_namespace n, pg_catalog.pg_extension e WHERE e.extname = 'pg_jobmon' AND e.extnamespace = n.oid;
    IF v_jobmon_schema IS NOT NULL THEN
        SELECT current_setting('search_path') INTO v_old_search_path;
        EXECUTE 'SELECT set_config(''search_path'',''@extschema@,'||v_jobmon_schema||''',''false'')';
    END IF;
END IF;

IF v_jobmon_schema IS NOT NULL THEN
    v_job_id := add_job('PARTMAN RUN MAINTENANCE');
    v_step_id := add_step(v_job_id, 'Running maintenance loop');
END IF;

v_tables_list_sql := 'SELECT parent_table
                , type
                , part_interval
                , control
                , premake
                , datetime_string
                , undo_in_progress
            FROM @extschema@.part_config';

IF p_parent_table IS NULL THEN
    v_tables_list_sql := v_tables_list_sql || ' WHERE use_run_maintenance = true';
ELSE
    v_tables_list_sql := v_tables_list_sql || format(' WHERE parent_table = %L', p_parent_table);
END IF;

FOR v_row IN EXECUTE v_tables_list_sql
LOOP

    CONTINUE WHEN v_row.undo_in_progress;

    SELECT show_partitions INTO v_last_partition FROM @extschema@.show_partitions(v_row.parent_table, 'DESC') LIMIT 1;

    IF v_row.type = 'time-static' OR v_row.type = 'time-dynamic' OR v_row.type = 'time-custom' THEN

        IF v_row.type = 'time-static' OR v_row.type = 'time-dynamic' THEN
            CASE
                WHEN v_row.part_interval::interval = '15 mins' THEN
                    v_current_partition_timestamp := date_trunc('hour', CURRENT_TIMESTAMP) + 
                        '15min'::interval * floor(date_part('minute', CURRENT_TIMESTAMP) / 15.0);
                WHEN v_row.part_interval::interval = '30 mins' THEN
                    v_current_partition_timestamp := date_trunc('hour', CURRENT_TIMESTAMP) + 
                        '30min'::interval * floor(date_part('minute', CURRENT_TIMESTAMP) / 30.0);
                WHEN v_row.part_interval::interval = '1 hour' THEN
                    v_current_partition_timestamp := date_trunc('hour', CURRENT_TIMESTAMP);
                 WHEN v_row.part_interval::interval = '1 day' THEN
                    v_current_partition_timestamp := date_trunc('day', CURRENT_TIMESTAMP);
                WHEN v_row.part_interval::interval = '1 week' THEN
                    v_current_partition_timestamp := date_trunc('week', CURRENT_TIMESTAMP);
                WHEN v_row.part_interval::interval = '1 month' THEN
                    v_current_partition_timestamp := date_trunc('month', CURRENT_TIMESTAMP);
                WHEN v_row.part_interval::interval = '3 months' THEN
                    v_current_partition_timestamp := date_trunc('quarter', CURRENT_TIMESTAMP);
                WHEN v_row.part_interval::interval = '1 year' THEN
                    v_current_partition_timestamp := date_trunc('year', CURRENT_TIMESTAMP);
            END CASE;
        ELSIF v_row.type = 'time-custom' THEN
            SELECT child_table INTO v_current_partition FROM @extschema@.custom_time_partitions 
                WHERE parent_table = v_row.parent_table AND partition_range @> CURRENT_TIMESTAMP;
            IF v_current_partition IS NULL THEN
                RAISE EXCEPTION 'Current time partition missing from custom_time_partitions config table for table % and timestamp %',
                     CURRENT_TIMESTAMP, v_row.parent_table;
            END IF;
            v_time_position := (length(v_current_partition) - position('p_' in reverse(v_current_partition))) + 2;
            v_current_partition_timestamp := to_timestamp(substring(v_current_partition from v_time_position), v_row.datetime_string);
        END IF;

        v_time_position := (length(v_last_partition) - position('p_' in reverse(v_last_partition))) + 2;
        IF v_row.part_interval::interval <> '3 months' OR (v_row.part_interval::interval = '3 months' AND v_row.type = 'time-custom') THEN
           v_last_partition_timestamp := to_timestamp(substring(v_last_partition from v_time_position), v_row.datetime_string);
        ELSE
            -- to_timestamp doesn't recognize 'Q' date string formater. Handle it
            v_year := split_part(substring(v_last_partition from v_time_position), 'q', 1);
            v_quarter := split_part(substring(v_last_partition from v_time_position), 'q', 2);
            CASE
                WHEN v_quarter = '1' THEN
                    v_last_partition_timestamp := to_timestamp(v_year || '-01-01', 'YYYY-MM-DD');
                WHEN v_quarter = '2' THEN
                    v_last_partition_timestamp := to_timestamp(v_year || '-04-01', 'YYYY-MM-DD');
                WHEN v_quarter = '3' THEN
                    v_last_partition_timestamp := to_timestamp(v_year || '-07-01', 'YYYY-MM-DD');
                WHEN v_quarter = '4' THEN
                    v_last_partition_timestamp := to_timestamp(v_year || '-10-01', 'YYYY-MM-DD');
            END CASE;
        END IF;

        -- Check and see how many premade partitions there are.
        -- Can be negative when subpartitioning and there are parent partitions in the past compared to current timestamp value.
        -- abs() prevents run_maintenence from running on those old parent tables
        v_premade_count = abs(round(EXTRACT('epoch' FROM age(v_last_partition_timestamp, v_current_partition_timestamp)) / EXTRACT('epoch' FROM v_row.part_interval::interval)));
        v_next_partition_timestamp := v_last_partition_timestamp;
        -- Loop premaking until config setting is met. Allows it to catch up if it fell behind or if premake changed.
        WHILE v_premade_count < v_row.premake LOOP
            BEGIN
                v_next_partition_timestamp := v_next_partition_timestamp + v_row.part_interval::interval;
            EXCEPTION WHEN datetime_field_overflow THEN
                v_premade_count := v_row.premake; -- do this so it can exit the premake check loop and continue in the outer for loop 
                IF v_jobmon_schema IS NOT NULL THEN
                    v_step_overflow_id := add_step(v_job_id, 'Attempted partition time interval is outside PostgreSQL''s supported time range.');
                    PERFORM update_step(v_step_overflow_id, 'CRITICAL', 'Child partition creation skippd for parent table '||v_partition_time);
                END IF;
                RAISE WARNING 'Attempted partition time interval is outside PostgreSQL''s supported time range. Child partition creation skipped for parent table %', v_row.parent_table;
                CONTINUE;
            END;

            v_last_partition_created := @extschema@.create_partition_time(v_row.parent_table, ARRAY[v_next_partition_timestamp], p_analyze); 
            v_create_count := v_create_count + 1;
            IF v_row.type = 'time-static' AND v_last_partition_created THEN
                PERFORM @extschema@.create_function_time(v_row.parent_table);
            END IF;

            -- Manage additonal constraints if set
            PERFORM @extschema@.apply_constraints(v_row.parent_table);
            -- Can be negative when subpartitioning and there are parent partitions in the past compared to current timestamp value.
            -- abs() prevents run_maintenence from running on those old parent tables
            v_premade_count = abs(round(EXTRACT('epoch' FROM age(v_next_partition_timestamp, v_current_partition_timestamp)) / EXTRACT('epoch' FROM v_row.part_interval::interval)));
        END LOOP;
    ELSIF v_row.type = 'id-static' OR v_row.type ='id-dynamic' THEN
        -- This doesn't need the overall max of a full subpartition set, just the max of the current partition set
        EXECUTE 'SELECT '||v_row.control||' - ('||v_row.control||' % '||v_row.part_interval::int||') FROM '||v_row.parent_table||'
            WHERE '||v_row.control||' = (SELECT max('||v_row.control||') FROM '||v_row.parent_table||')' 
            INTO v_current_partition_id;
        v_id_position := (length(v_last_partition) - position('p_' in reverse(v_last_partition))) + 2;
        v_last_partition_id = substring(v_last_partition from v_id_position)::bigint;
        -- This catches if there's invalid data in a parent table set that's outside all child table ranges.
        IF v_last_partition_id < v_current_partition_id THEN
            IF v_jobmon_schema IS NOT NULL THEN
                v_step_serial_id := add_step(v_job_id, 'Found inconsistent data in serial partition set.');
                PERFORM update_step(v_step_serial_id, 'CRITICAL', 'Child partition creation skipped for parent table '||v_row.parent_table||'. Current max serial id value ('||v_current_partition_id||') is greater than the id range covered by the last partition created ('||v_last_partition||'). Run check_parent() to find possible cause.');
            END IF;
            RAISE WARNING 'Child partition creation skipped for parent table %. Found inconsistent data in serial partition set. Current max serial id value (%) is greater than the id range covered by the last partition created (%). Run check_parent() to find possible cause.', v_row.parent_table, v_current_partition_id, v_last_partition;
            CONTINUE;
        END IF;
        v_next_partition_id := v_last_partition_id + v_row.part_interval::bigint;
        -- Can be negative when subpartitioning and there are parent partitions with lower values compared to current id value.
        -- abs() prevents run_maintenence from running on those old parent tables
        WHILE (abs((v_next_partition_id - v_current_partition_id) / v_row.part_interval::bigint)) <= v_row.premake 
        LOOP 
            v_last_partition_created := @extschema@.create_partition_id(v_row.parent_table, ARRAY[v_next_partition_id], p_analyze);
            IF v_last_partition_created THEN
                PERFORM @extschema@.create_function_id(v_row.parent_table);
                PERFORM @extschema@.apply_constraints(v_row.parent_table);
            END IF;
            v_next_partition_id := v_next_partition_id + v_row.part_interval::bigint;
        END LOOP;

    END IF; -- end main IF check for time or id

END LOOP; -- end of creation loop

-- Manage dropping old partitions if retention option is set
FOR v_row IN 
    SELECT parent_table FROM @extschema@.part_config WHERE retention IS NOT NULL AND undo_in_progress = false AND 
        (type = 'time-static' OR type = 'time-dynamic' OR type = 'time-custom')
LOOP
    IF p_parent_table IS NULL THEN
        v_drop_count := v_drop_count + @extschema@.drop_partition_time(v_row.parent_table);   
    ELSE -- Only run retention on table given in parameter
        IF p_parent_table <> v_row.parent_table THEN
            CONTINUE;
        ELSE
            v_drop_count := v_drop_count + @extschema@.drop_partition_time(v_row.parent_table);   
        END IF;
    END IF;
END LOOP; 
FOR v_row IN 
    SELECT parent_table FROM @extschema@.part_config WHERE retention IS NOT NULL AND undo_in_progress = false AND (type = 'id-static' OR type = 'id-dynamic')
LOOP
    IF p_parent_table IS NULL THEN
        v_drop_count := v_drop_count + @extschema@.drop_partition_id(v_row.parent_table);
    ELSE -- Only run retention on table given in parameter
        IF p_parent_table <> v_row.parent_table THEN
            CONTINUE;
        ELSE
            v_drop_count := v_drop_count + @extschema@.drop_partition_id(v_row.parent_table);
        END IF;
    END IF;
END LOOP; 

IF v_jobmon_schema IS NOT NULL THEN
    PERFORM update_step(v_step_id, 'OK', 'Partition maintenance finished. '||v_create_count||' partitons made. '||v_drop_count||' partitions dropped.');
    IF v_step_overflow_id IS NOT NULL OR v_step_serial_id IS NOT NULL THEN
        PERFORM fail_job(v_job_id);
    ELSE
        PERFORM close_job(v_job_id);
    END IF;
    EXECUTE 'SELECT set_config(''search_path'','''||v_old_search_path||''',''false'')';
END IF;

EXCEPTION
    WHEN OTHERS THEN
        IF v_jobmon_schema IS NOT NULL THEN
            IF v_job_id IS NULL THEN
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_job(''PARTMAN RUN MAINTENANCE'')' INTO v_job_id;
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_step('||v_job_id||', ''EXCEPTION before job logging started'')' INTO v_step_id;
            ELSIF v_step_id IS NULL THEN
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_step('||v_job_id||', ''EXCEPTION before first step logged'')' INTO v_step_id;
            END IF;
            EXECUTE 'SELECT '||v_jobmon_schema||'.update_step('||v_step_id||', ''CRITICAL'', ''ERROR: '||coalesce(SQLERRM,'unknown')||''')';
            EXECUTE 'SELECT '||v_jobmon_schema||'.fail_job('||v_job_id||')';
        END IF;
        RAISE EXCEPTION '%', SQLERRM;
END
$$;


/*
 * Function to drop child tables from an id-based partition set. 
 * Options to move table to different schema, drop only indexes or actually drop the table from the database.
 */
CREATE OR REPLACE FUNCTION drop_partition_id(p_parent_table text, p_retention bigint DEFAULT NULL, p_keep_table boolean DEFAULT NULL, p_keep_index boolean DEFAULT NULL, p_retention_schema text DEFAULT NULL) RETURNS int
    LANGUAGE plpgsql SECURITY DEFINER
    AS $$
DECLARE

v_adv_lock                  boolean;
v_child_table               text;
v_control                   text;
v_drop_count                int := 0;
v_id_position               int;
v_index                     record;
v_job_id                    bigint;
v_jobmon                    boolean;
v_jobmon_schema             text;
v_max                       bigint;
v_old_search_path           text;
v_part_interval             bigint;
v_partition_id              bigint;
v_retention                 bigint;
v_retention_keep_index      boolean;
v_retention_keep_table      boolean;
v_retention_schema          text;
v_step_id                   bigint;

BEGIN

v_adv_lock := pg_try_advisory_xact_lock(hashtext('pg_partman drop_partition_id'));
IF v_adv_lock = 'false' THEN
    RAISE NOTICE 'drop_partition_id already running.';
    RETURN 0;
END IF;

-- Allow override of configuration options
IF p_retention IS NULL THEN
    SELECT  
        part_interval::bigint
        , control
        , retention::bigint
        , retention_keep_table
        , retention_keep_index
        , retention_schema
        , jobmon
    INTO
        v_part_interval
        , v_control
        , v_retention
        , v_retention_keep_table
        , v_retention_keep_index
        , v_retention_schema
        , v_jobmon
    FROM @extschema@.part_config 
    WHERE parent_table = p_parent_table 
    AND (type = 'id-static' OR type = 'id-dynamic') 
    AND retention IS NOT NULL;

    IF v_part_interval IS NULL THEN
        RAISE EXCEPTION 'Configuration for given parent table with a retention period not found: %', p_parent_table;
    END IF;
ELSE
     SELECT  
        part_interval::bigint
        , control
        , retention_keep_table
        , retention_keep_index
        , retention_schema
        , jobmon
    INTO
        v_part_interval
        , v_control
        , v_retention_keep_table
        , v_retention_keep_index
        , v_retention_schema
        , v_jobmon
    FROM @extschema@.part_config 
    WHERE parent_table = p_parent_table 
    AND (type = 'id-static' OR type = 'id-dynamic'); 
    v_retention := p_retention;

    IF v_part_interval IS NULL THEN
        RAISE EXCEPTION 'Configuration for given parent table not found: %', p_parent_table;
    END IF;
END IF;

IF v_jobmon THEN
    SELECT nspname INTO v_jobmon_schema FROM pg_namespace n, pg_extension e WHERE e.extname = 'pg_jobmon' AND e.extnamespace = n.oid;
    IF v_jobmon_schema IS NOT NULL THEN
        SELECT current_setting('search_path') INTO v_old_search_path;
        EXECUTE 'SELECT set_config(''search_path'',''@extschema@,'||v_jobmon_schema||''',''false'')';
    END IF;
END IF;

IF p_keep_table IS NOT NULL THEN
    v_retention_keep_table = p_keep_table;
END IF;
IF p_keep_index IS NOT NULL THEN
    v_retention_keep_index = p_keep_index;
END IF;
IF p_retention_schema IS NOT NULL THEN
    v_retention_schema = p_retention_schema;
END IF;

IF v_jobmon_schema IS NOT NULL THEN
    v_job_id := add_job('PARTMAN DROP ID PARTITION: '|| p_parent_table);
END IF;

EXECUTE 'SELECT max('||v_control||') FROM '||p_parent_table INTO v_max;

-- Loop through child tables of the given parent
FOR v_child_table IN 
    SELECT n.nspname||'.'||c.relname FROM pg_inherits i join pg_class c ON i.inhrelid = c.oid join pg_namespace n ON c.relnamespace = n.oid WHERE i.inhparent::regclass = p_parent_table::regclass ORDER BY i.inhrelid ASC
LOOP
    v_id_position := (length(v_child_table) - position('p_' in reverse(v_child_table))) + 2;
    v_partition_id := substring(v_child_table from v_id_position)::bigint;

    -- Add one interval since partition names contain the start of the constraint period
    IF v_retention <= (v_max - (v_partition_id + v_part_interval)) THEN
        IF v_jobmon_schema IS NOT NULL THEN
            v_step_id := add_step(v_job_id, 'Uninherit table '||v_child_table||' from '||p_parent_table);
        END IF;
        EXECUTE 'ALTER TABLE '||v_child_table||' NO INHERIT ' || p_parent_table;
        IF v_jobmon_schema IS NOT NULL THEN
            PERFORM update_step(v_step_id, 'OK', 'Done');
        END IF;
        IF v_retention_schema IS NULL THEN
            IF v_retention_keep_table = false THEN
                IF v_jobmon_schema IS NOT NULL THEN
                    v_step_id := add_step(v_job_id, 'Drop table '||v_child_table);
                END IF;
                EXECUTE 'DROP TABLE '||v_child_table||' CASCADE';
                IF v_jobmon_schema IS NOT NULL THEN
                    PERFORM update_step(v_step_id, 'OK', 'Done');
                END IF;
            ELSIF v_retention_keep_index = false THEN
                FOR v_index IN 
                    SELECT i.indexrelid::regclass AS name
                    , c.conname
                    FROM pg_catalog.pg_index i
                    LEFT JOIN pg_catalog.pg_constraint c ON i.indexrelid = c.conindid 
                    WHERE i.indrelid = v_child_table::regclass
                LOOP
                    IF v_jobmon_schema IS NOT NULL THEN
                        v_step_id := add_step(v_job_id, 'Drop index '||v_index.name||' from '||v_child_table);
                    END IF;
                    IF v_index.conname IS NOT NULL THEN
                        EXECUTE 'ALTER TABLE '||v_child_table||' DROP CONSTRAINT '||v_index.conname;
                    ELSE
                        EXECUTE 'DROP INDEX '||v_index.name;
                    END IF;
                    IF v_jobmon_schema IS NOT NULL THEN
                        PERFORM update_step(v_step_id, 'OK', 'Done');
                    END IF;
                END LOOP;
            END IF;
        ELSE -- Move to new schema
            IF v_jobmon_schema IS NOT NULL THEN
                v_step_id := add_step(v_job_id, 'Moving table '||v_child_table||' to schema '||v_retention_schema);
            END IF;

            EXECUTE 'ALTER TABLE '||v_child_table||' SET SCHEMA '||v_retention_schema; 

            IF v_jobmon_schema IS NOT NULL THEN
                PERFORM update_step(v_step_id, 'OK', 'Done');
            END IF;
        END IF; -- End retention schema if

        -- If child table is a subpartition, remove it from part_config & part_config_sub (should cascade due to FK)
        DELETE FROM @extschema@.part_config WHERE parent_table = v_child_table;

        v_drop_count := v_drop_count + 1;
    END IF; -- End retention check IF

END LOOP; -- End child table loop

IF v_jobmon_schema IS NOT NULL THEN
    v_step_id := add_step(v_job_id, 'Finished partition drop maintenance');
    PERFORM update_step(v_step_id, 'OK', v_drop_count||' partitions dropped.');
    PERFORM close_job(v_job_id);
    EXECUTE 'SELECT set_config(''search_path'','''||v_old_search_path||''',''false'')';
END IF;

RETURN v_drop_count;

EXCEPTION
    WHEN OTHERS THEN
        IF v_jobmon_schema IS NOT NULL THEN
            IF v_job_id IS NULL THEN
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_job(''PARTMAN DROP ID PARTITION: '||p_parent_table||''')' INTO v_job_id;
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_step('||v_job_id||', ''EXCEPTION before job logging started'')' INTO v_step_id;
            ELSIF v_step_id IS NULL THEN
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_step('||v_job_id||', ''EXCEPTION before first step logged'')' INTO v_step_id;
            END IF;
            EXECUTE 'SELECT '||v_jobmon_schema||'.update_step('||v_step_id||', ''CRITICAL'', ''ERROR: '||coalesce(SQLERRM,'unknown')||''')';
            EXECUTE 'SELECT '||v_jobmon_schema||'.fail_job('||v_job_id||')';
        END IF;
        RAISE EXCEPTION '%', SQLERRM;
END
$$;


/*
 * Function to drop child tables from a time-based partition set.
 * Options to move table to different schema, drop only indexes or actually drop the table from the database.
 */
CREATE OR REPLACE FUNCTION drop_partition_time(p_parent_table text, p_retention interval DEFAULT NULL, p_keep_table boolean DEFAULT NULL, p_keep_index boolean DEFAULT NULL, p_retention_schema text DEFAULT NULL) RETURNS int
    LANGUAGE plpgsql SECURITY DEFINER
    AS $$
DECLARE

v_adv_lock                  boolean;
v_child_table               text;
v_datetime_string           text;
v_drop_count                int := 0;
v_index                     record;
v_job_id                    bigint;
v_jobmon                    boolean;
v_jobmon_schema             text;
v_old_search_path           text;
v_part_interval             interval;
v_partition_timestamp       timestamp;
v_quarter                   text;
v_retention                 interval;
v_retention_keep_index      boolean;
v_retention_keep_table      boolean;
v_retention_schema          text;
v_step_id                   bigint;
v_time_position             int;
v_type                      text;
v_year                      text;

BEGIN

v_adv_lock := pg_try_advisory_xact_lock(hashtext('pg_partman drop_partition_time'));
IF v_adv_lock = 'false' THEN
    RAISE NOTICE 'drop_partition_time already running.';
    RETURN 0;
END IF;

-- Allow override of configuration options
IF p_retention IS NULL THEN
    SELECT  
        type
        , part_interval::interval
        , retention::interval
        , retention_keep_table
        , retention_keep_index
        , datetime_string
        , retention_schema
        , jobmon
    INTO
        v_type
        , v_part_interval
        , v_retention
        , v_retention_keep_table
        , v_retention_keep_index
        , v_datetime_string
        , v_retention_schema
        , v_jobmon
    FROM @extschema@.part_config 
    WHERE parent_table = p_parent_table 
    AND (type = 'time-static' OR type = 'time-dynamic' OR type = 'time-custom') 
    AND retention IS NOT NULL;
    
    IF v_part_interval IS NULL THEN
        RAISE EXCEPTION 'Configuration for given parent table with a retention period not found: %', p_parent_table;
    END IF;
ELSE
    SELECT  
        type
        , part_interval::interval
        , retention_keep_table
        , retention_keep_index
        , datetime_string
        , retention_schema
        , jobmon
    INTO
        v_type
        , v_part_interval
        , v_retention_keep_table
        , v_retention_keep_index
        , v_datetime_string
        , v_retention_schema
        , v_jobmon
    FROM @extschema@.part_config 
    WHERE parent_table = p_parent_table 
    AND (type = 'time-static' OR type = 'time-dynamic' OR type = 'time-custom'); 
    v_retention := p_retention;
    
    IF v_part_interval IS NULL THEN
        RAISE EXCEPTION 'Configuration for given parent table not found: %', p_parent_table;
    END IF;
END IF;

IF v_jobmon THEN
    SELECT nspname INTO v_jobmon_schema FROM pg_namespace n, pg_extension e WHERE e.extname = 'pg_jobmon' AND e.extnamespace = n.oid;
    IF v_jobmon_schema IS NOT NULL THEN
        SELECT current_setting('search_path') INTO v_old_search_path;
        EXECUTE 'SELECT set_config(''search_path'',''@extschema@,'||v_jobmon_schema||''',''false'')';
    END IF;
END IF;

IF p_keep_table IS NOT NULL THEN
    v_retention_keep_table = p_keep_table;
END IF;
IF p_keep_index IS NOT NULL THEN
    v_retention_keep_index = p_keep_index;
END IF;
IF p_retention_schema IS NOT NULL THEN
    v_retention_schema = p_retention_schema;
END IF;

IF v_jobmon_schema IS NOT NULL THEN
    v_job_id := add_job('PARTMAN DROP TIME PARTITION: '|| p_parent_table);
END IF;

-- Loop through child tables of the given parent
FOR v_child_table IN 
    SELECT n.nspname||'.'||c.relname FROM pg_inherits i join pg_class c ON i.inhrelid = c.oid join pg_namespace n ON c.relnamespace = n.oid WHERE i.inhparent::regclass = p_parent_table::regclass ORDER BY i.inhrelid ASC
LOOP
    -- pull out datetime portion of partition's tablename to make the next one
    v_time_position := (length(v_child_table) - position('p_' in reverse(v_child_table))) + 2;
    IF v_part_interval <> '3 months' OR (v_part_interval = '3 months' AND v_type = 'time-custom') THEN
        v_partition_timestamp := to_timestamp(substring(v_child_table from v_time_position), v_datetime_string);
    ELSE
        -- to_timestamp doesn't recognize 'Q' date string formater. Handle it
        v_year := split_part(substring(v_child_table from v_time_position), 'q', 1);
        v_quarter := split_part(substring(v_child_table from v_time_position), 'q', 2);
        CASE
            WHEN v_quarter = '1' THEN
                v_partition_timestamp := to_timestamp(v_year || '-01-01', 'YYYY-MM-DD');
            WHEN v_quarter = '2' THEN
                v_partition_timestamp := to_timestamp(v_year || '-04-01', 'YYYY-MM-DD');
            WHEN v_quarter = '3' THEN
                v_partition_timestamp := to_timestamp(v_year || '-07-01', 'YYYY-MM-DD');
            WHEN v_quarter = '4' THEN
                v_partition_timestamp := to_timestamp(v_year || '-10-01', 'YYYY-MM-DD');
        END CASE;
    END IF;

    -- Add one interval since partition names contain the start of the constraint period
    IF v_retention < (CURRENT_TIMESTAMP - (v_partition_timestamp + v_part_interval)) THEN
        IF v_jobmon_schema IS NOT NULL THEN
            v_step_id := add_step(v_job_id, 'Uninherit table '||v_child_table||' from '||p_parent_table);
        END IF;
        EXECUTE 'ALTER TABLE '||v_child_table||' NO INHERIT ' || p_parent_table;
        IF v_jobmon_schema IS NOT NULL THEN
            PERFORM update_step(v_step_id, 'OK', 'Done');
        END IF;
        IF v_retention_schema IS NULL THEN
            IF v_retention_keep_table = false THEN
                IF v_jobmon_schema IS NOT NULL THEN
                    v_step_id := add_step(v_job_id, 'Drop table '||v_child_table);
                END IF;
                EXECUTE 'DROP TABLE '||v_child_table||' CASCADE';
                IF v_jobmon_schema IS NOT NULL THEN
                    PERFORM update_step(v_step_id, 'OK', 'Done');
                END IF;
            ELSIF v_retention_keep_index = false THEN
                FOR v_index IN 
                    SELECT i.indexrelid::regclass AS name
                    , c.conname
                    FROM pg_catalog.pg_index i
                    LEFT JOIN pg_catalog.pg_constraint c ON i.indexrelid = c.conindid 
                    WHERE i.indrelid = v_child_table::regclass
                LOOP
                    IF v_jobmon_schema IS NOT NULL THEN
                        v_step_id := add_step(v_job_id, 'Drop index '||v_index.name||' from '||v_child_table);
                    END IF;
                    IF v_index.conname IS NOT NULL THEN
                        EXECUTE 'ALTER TABLE '||v_child_table||' DROP CONSTRAINT '||v_index.conname;
                    ELSE
                        EXECUTE 'DROP INDEX '||v_index.name;
                    END IF;
                    IF v_jobmon_schema IS NOT NULL THEN
                        PERFORM update_step(v_step_id, 'OK', 'Done');
                    END IF;
                END LOOP;
            END IF;
        ELSE -- Move to new schema
            IF v_jobmon_schema IS NOT NULL THEN
                v_step_id := add_step(v_job_id, 'Moving table '||v_child_table||' to schema '||v_retention_schema);
            END IF;

            EXECUTE 'ALTER TABLE '||v_child_table||' SET SCHEMA '||v_retention_schema; 

            IF v_jobmon_schema IS NOT NULL THEN
                PERFORM update_step(v_step_id, 'OK', 'Done');
            END IF;
        END IF; -- End retention schema if

        -- If child table is a subpartition, remove it from part_config & part_config_sub (should cascade due to FK)
        DELETE FROM @extschema@.part_config WHERE parent_table = v_child_table;

        v_drop_count := v_drop_count + 1;
    END IF; -- End retention check IF

END LOOP; -- End child table loop

IF v_jobmon_schema IS NOT NULL THEN
    v_step_id := add_step(v_job_id, 'Finished partition drop maintenance');
    PERFORM update_step(v_step_id, 'OK', v_drop_count||' partitions dropped.');
    PERFORM close_job(v_job_id);
    EXECUTE 'SELECT set_config(''search_path'','''||v_old_search_path||''',''false'')';
END IF;

RETURN v_drop_count;

EXCEPTION
    WHEN OTHERS THEN
        IF v_jobmon_schema IS NOT NULL THEN
            IF v_job_id IS NULL THEN
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_job(''PARTMAN DROP TIME PARTITION: '||p_parent_table||''')' INTO v_job_id;
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_step('||v_job_id||', ''EXCEPTION before job logging started'')' INTO v_step_id;
            ELSIF v_step_id IS NULL THEN
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_step('||v_job_id||', ''EXCEPTION before first step logged'')' INTO v_step_id;
            END IF;
            EXECUTE 'SELECT '||v_jobmon_schema||'.update_step('||v_step_id||', ''CRITICAL'', ''ERROR: '||coalesce(SQLERRM,'unknown')||''')';
            EXECUTE 'SELECT '||v_jobmon_schema||'.fail_job('||v_job_id||')';
        END IF;
        RAISE EXCEPTION '%', SQLERRM;
END
$$;


/*
 * Function to list all child partitions in a set.
 */
CREATE OR REPLACE FUNCTION show_partitions (p_parent_table text, p_order text DEFAULT 'ASC') RETURNS SETOF text
    LANGUAGE plpgsql STABLE SECURITY DEFINER 
    AS $$
DECLARE

v_datetime_string   text;
v_part_interval     text;  
v_type              text;

BEGIN

IF p_order NOT IN ('ASC', 'DESC') THEN
    RAISE EXCEPTION 'p_order paramter must be one of the following values: ASC, DESC';
END IF;

SELECT type
    , part_interval
    , datetime_string
INTO v_type
    , v_part_interval
    , v_datetime_string
FROM @extschema@.part_config
WHERE parent_table = p_parent_table;

IF v_type IN ('time-static', 'time-dynamic', 'time-custom') THEN

    RETURN QUERY EXECUTE '
    SELECT n.nspname::text ||''.''|| c.relname::text AS partition_name FROM
    pg_catalog.pg_inherits h
    JOIN pg_catalog.pg_class c ON c.oid = h.inhrelid
    JOIN pg_catalog.pg_namespace n ON c.relnamespace = n.oid
    WHERE h.inhparent = '||quote_literal(p_parent_table)||'::regclass
    ORDER BY to_timestamp(substring(c.relname from ((length(c.relname) - position(''p_'' in reverse(c.relname))) + 2) ), '||quote_literal(v_datetime_string)||') ' || p_order;

ELSIF v_type IN ('id-static', 'id-dynamic') THEN
    
    RETURN QUERY EXECUTE '
    SELECT n.nspname::text ||''.''|| c.relname::text AS partition_name FROM
    pg_catalog.pg_inherits h
    JOIN pg_catalog.pg_class c ON c.oid = h.inhrelid
    JOIN pg_catalog.pg_namespace n ON c.relnamespace = n.oid
    WHERE h.inhparent = '||quote_literal(p_parent_table)||'::regclass
    ORDER BY substring(c.relname from ((length(c.relname) - position(''p_'' in reverse(c.relname))) + 2) )::bigint ' || p_order;

END IF;

END
$$;


/*
 * Apply constraints managed by partman extension
 */
CREATE OR REPLACE FUNCTION apply_constraints(p_parent_table text, p_child_table text DEFAULT NULL, p_analyze boolean DEFAULT TRUE, p_debug boolean DEFAULT FALSE) RETURNS void
    LANGUAGE plpgsql
    AS $$
DECLARE

v_child_table                   text;
v_child_tablename               text;
v_col                           text;
v_constraint_cols               text[];
v_constraint_col_type           text;
v_constraint_name               text;
v_datetime_string               text;
v_existing_constraint_name      text;
v_job_id                        bigint;
v_jobmon                        boolean;
v_jobmon_schema                 text;
v_last_partition                text;
v_last_partition_id             int; 
v_last_partition_timestamp      timestamp;
v_constraint_values             record;
v_old_search_path               text;
v_parent_schema                 text;
v_parent_tablename              text;
v_part_interval                 text;
v_partition_suffix              text;
v_premake                       int;
v_sql                           text;
v_step_id                       bigint;
v_suffix_position               int;
v_type                          text;

BEGIN

SELECT type
    , part_interval
    , premake
    , datetime_string
    , constraint_cols
    , jobmon
INTO v_type
    , v_part_interval
    , v_premake
    , v_datetime_string
    , v_constraint_cols
    , v_jobmon
FROM @extschema@.part_config
WHERE parent_table = p_parent_table;

IF v_constraint_cols IS NULL THEN
    IF p_debug THEN
        RAISE NOTICE 'Given parent table (%) not set up for constraint management (constraint_cols is NULL)', p_parent_table;
    END IF;
    -- Returns silently to allow this function to be simply called by maintenance processes without having to check if config options are set.
    RETURN;
END IF;

SELECT show_partitions INTO v_last_partition FROM @extschema@.show_partitions(p_parent_table, 'DESC') LIMIT 1;

IF v_jobmon THEN
    SELECT nspname INTO v_jobmon_schema FROM pg_catalog.pg_namespace n, pg_catalog.pg_extension e WHERE e.extname = 'pg_jobmon' AND e.extnamespace = n.oid;
    IF v_jobmon_schema IS NOT NULL THEN
        SELECT current_setting('search_path') INTO v_old_search_path;
        EXECUTE 'SELECT set_config(''search_path'',''@extschema@,'||v_jobmon_schema||''',''false'')';
    END IF;
END IF;

IF v_jobmon_schema IS NOT NULL THEN
    v_job_id := add_job('PARTMAN CREATE CONSTRAINT: '||p_parent_table);
END IF;

SELECT schemaname, tablename INTO v_parent_schema, v_parent_tablename FROM pg_tables WHERE schemaname ||'.'|| tablename = p_parent_table;

-- If p_child_table is null, figure out the partition that is the one right before the premake value backwards.
IF p_child_table IS NULL THEN
    
    IF v_jobmon_schema IS NOT NULL THEN
        v_step_id := add_step(v_job_id, 'Automatically determining most recent child on which to apply constraints');
    END IF;

    v_suffix_position := (length(v_last_partition) - position('p_' in reverse(v_last_partition))) + 2;

    IF v_type IN ('time-static', 'time-dynamic') THEN
        v_last_partition_timestamp := to_timestamp(substring(v_last_partition from v_suffix_position), v_datetime_string);
        v_partition_suffix := to_char(v_last_partition_timestamp - (v_part_interval::interval * ((v_premake * 2)+1) ), v_datetime_string);
    ELSIF v_type IN ('id-static', 'id-dynamic') THEN
        v_last_partition_id := substring(v_last_partition from v_suffix_position)::int;
        v_partition_suffix := (v_last_partition_id - (v_part_interval::int * ((v_premake * 2)+1) ))::text; 
    END IF;
    
    v_child_table := @extschema@.check_name_length(v_parent_tablename, v_parent_schema, v_partition_suffix, TRUE);

    IF v_jobmon_schema IS NOT NULL THEN
        PERFORM update_step(v_step_id, 'OK', 'Target child table: '||v_child_table);
    END IF;
ELSE
    v_child_table := p_child_table;
END IF;
    
IF v_jobmon_schema IS NOT NULL THEN
    v_step_id := add_step(v_job_id, 'Checking if target child table exists');
END IF;

SELECT tablename INTO v_child_tablename FROM pg_catalog.pg_tables WHERE schemaname ||'.'|| tablename = v_child_table;
IF v_child_tablename IS NULL THEN
    IF v_jobmon_schema IS NOT NULL THEN
        PERFORM update_step(v_step_id, 'NOTICE', 'Target child table ('||v_child_table||') does not exist. Skipping constraint creation.');
        PERFORM close_job(v_job_id);
        EXECUTE 'SELECT set_config(''search_path'','''||v_old_search_path||''',''false'')';
    END IF;
    IF p_debug THEN
        RAISE NOTICE 'Target child table (%) does not exist. Skipping constraint creation.', v_child_table;
    END IF;
    RETURN;
ELSE
    IF v_jobmon_schema IS NOT NULL THEN
        PERFORM update_step(v_step_id, 'OK', 'Done');
    END IF;
END IF;

FOREACH v_col IN ARRAY v_constraint_cols
LOOP
    SELECT c.conname
    INTO v_existing_constraint_name
    FROM pg_catalog.pg_constraint c 
        JOIN pg_catalog.pg_attribute a ON c.conrelid = a.attrelid 
    WHERE conrelid = v_child_table::regclass 
        AND c.conname LIKE 'partmanconstr_%'
        AND c.contype = 'c' 
        AND a.attname = v_col
        AND ARRAY[a.attnum] <@ c.conkey 
        AND a.attisdropped = false;

    IF v_jobmon_schema IS NOT NULL THEN
        v_step_id := add_step(v_job_id, 'Applying new constraint on column: '||v_col);
    END IF;

    IF v_existing_constraint_name IS NOT NULL THEN
        IF v_jobmon_schema IS NOT NULL THEN
            PERFORM update_step(v_step_id, 'NOTICE', 'Partman managed constraint already exists on this table ('||v_child_table||') and column ('||v_col||'). Skipping creation.');
        END IF;
        RAISE WARNING 'Partman managed constraint already exists on this table (%) and column (%). Skipping creation.', v_child_table, v_col ;
        CONTINUE;
    END IF;

    -- Ensure column name gets put on end of constraint name to help avoid naming conflicts 
    v_constraint_name := @extschema@.check_name_length('partmanconstr_'||v_child_tablename, p_suffix := '_'||v_col);

    EXECUTE 'SELECT min('||v_col||')::text AS min, max('||v_col||')::text AS max FROM '||v_child_table INTO v_constraint_values;

    IF v_constraint_values IS NOT NULL THEN
        v_sql := concat('ALTER TABLE ', v_child_table, ' ADD CONSTRAINT ', v_constraint_name
            , ' CHECK (', v_col, ' >= ', quote_literal(v_constraint_values.min), ' AND '
            , v_col, ' <= ', quote_literal(v_constraint_values.max), ')' );
        IF p_debug THEN
            RAISE NOTICE 'Constraint creation query: %', v_sql;
        END IF;
        EXECUTE v_sql;

        IF v_jobmon_schema IS NOT NULL THEN
            PERFORM update_step(v_step_id, 'OK', 'New constraint created: '||v_sql);
        END IF;
    ELSE
        IF p_debug THEN
            RAISE NOTICE 'Given column (%) contains all NULLs. No constraint created', v_col;
        END IF;
        IF v_jobmon_schema IS NOT NULL THEN
            PERFORM update_step(v_step_id, 'NOTICE', 'Given column ('||v_col||') contains all NULLs. No constraint created');
        END IF;
    END IF;

END LOOP;

IF p_analyze THEN
    EXECUTE 'ANALYZE '||p_parent_table;
END IF;

IF v_jobmon_schema IS NOT NULL THEN
    PERFORM close_job(v_job_id);
    EXECUTE 'SELECT set_config(''search_path'','''||v_old_search_path||''',''false'')';
END IF;

EXCEPTION
    WHEN OTHERS THEN
        IF v_jobmon_schema IS NOT NULL THEN
            IF v_job_id IS NULL THEN
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_job(''PARTMAN CREATE CONSTRAINT: '||p_parent_table||''')' INTO v_job_id;
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_step('||v_job_id||', ''EXCEPTION before job logging started'')' INTO v_step_id;
            ELSIF v_step_id IS NULL THEN
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_step('||v_job_id||', ''EXCEPTION before first step logged'')' INTO v_step_id;
            END IF;
            EXECUTE 'SELECT '||v_jobmon_schema||'.update_step('||v_step_id||', ''CRITICAL'', ''ERROR: '||coalesce(SQLERRM,'unknown')||''')';
            EXECUTE 'SELECT '||v_jobmon_schema||'.fail_job('||v_job_id||')';
        END IF;
        RAISE EXCEPTION '%', SQLERRM;
END
$$;


/*
 * Function to undo time-based partitioning created by this extension
 */
CREATE OR REPLACE FUNCTION undo_partition_time(p_parent_table text, p_batch_count int DEFAULT 1, p_batch_interval interval DEFAULT NULL, p_keep_table boolean DEFAULT true, p_lock_wait numeric DEFAULT 0) RETURNS bigint
    LANGUAGE plpgsql SECURITY DEFINER
    AS $$
DECLARE

v_adv_lock              boolean;
v_batch_loop_count      int := 0;
v_child_min             timestamptz;
v_child_loop_total      bigint := 0;
v_child_table           text;
v_control               text;
v_function_name         text;
v_inner_loop_count      int;
v_lock_iter             int := 1;
v_lock_obtained         boolean := FALSE;
v_job_id                bigint;
v_jobmon                boolean;
v_jobmon_schema         text;
v_move_sql              text;
v_old_search_path       text;
v_parent_schema         text;
v_parent_tablename      text;
v_part_interval         interval;
v_row                   record;
v_rowcount              bigint;
v_step_id               bigint;
v_sub_count             int;
v_total                 bigint := 0;
v_trig_name             text;
v_undo_count            int := 0;

BEGIN

v_adv_lock := pg_try_advisory_xact_lock(hashtext('pg_partman undo_time_partition'));
IF v_adv_lock = 'false' THEN
    RAISE NOTICE 'undo_time_partition already running.';
    RETURN 0;
END IF;

SELECT part_interval::interval
    , control
    , jobmon
INTO v_part_interval
    , v_control
    , v_jobmon
FROM @extschema@.part_config 
WHERE parent_table = p_parent_table 
AND (type = 'time-static' OR type = 'time-dynamic' OR type = 'time-custom');

IF v_part_interval IS NULL THEN
    RAISE EXCEPTION 'Configuration for given parent table not found: %', p_parent_table;
END IF;

-- Check if any child tables are themselves partitioned or part of an inheritance tree. Prevent undo at this level if so.
-- Need to either lock child tables at all levels or handle the proper removal of triggers on all child tables first 
--  before multi-level undo can be performed safely.
FOR v_row IN 
    SELECT show_partitions AS child_table FROM @extschema@.show_partitions(p_parent_table)
LOOP
    SELECT count(*) INTO v_sub_count 
    FROM pg_catalog.pg_inherits
    WHERE inhparent::regclass = v_row.child_table::regclass;
    IF v_sub_count > 0 THEN
        RAISE EXCEPTION 'Child table for this parent has child table(s) itself (%). Run undo partitioning on this table or remove inheritance first to ensure all data is properly moved to parent', v_row.child_table;
    END IF;
END LOOP;

IF v_jobmon THEN
    SELECT nspname INTO v_jobmon_schema FROM pg_namespace n, pg_extension e WHERE e.extname = 'pg_jobmon' AND e.extnamespace = n.oid;
    IF v_jobmon_schema IS NOT NULL THEN
        SELECT current_setting('search_path') INTO v_old_search_path;
        EXECUTE 'SELECT set_config(''search_path'',''@extschema@,'||v_jobmon_schema||''',''false'')';
    END IF;
END IF;

IF v_jobmon_schema IS NOT NULL THEN
    v_job_id := add_job('PARTMAN UNDO PARTITIONING: '||p_parent_table);
    v_step_id := add_step(v_job_id, 'Undoing partitioning for table '||p_parent_table);
END IF;

IF p_batch_interval IS NULL THEN
    p_batch_interval := v_part_interval;
END IF;

-- Stops new time partitons from being made as well as stopping child tables from being dropped if they were configured with a retention period.
UPDATE @extschema@.part_config SET undo_in_progress = true WHERE parent_table = p_parent_table;
-- Stop data going into child tables.
SELECT schemaname, tablename INTO v_parent_schema, v_parent_tablename FROM pg_tables WHERE schemaname ||'.'|| tablename = p_parent_table;
v_trig_name := @extschema@.check_name_length(p_object_name := v_parent_tablename, p_suffix := '_part_trig'); 
v_function_name := @extschema@.check_name_length(v_parent_tablename, v_parent_schema, '_part_trig_func', FALSE);

SELECT tgname INTO v_trig_name FROM pg_catalog.pg_trigger t WHERE tgname = v_trig_name;
IF v_trig_name IS NOT NULL THEN
    -- lockwait for trigger drop
    IF p_lock_wait > 0  THEN
        v_lock_iter := 0;
        WHILE v_lock_iter <= 5 LOOP
            v_lock_iter := v_lock_iter + 1;
            BEGIN
                EXECUTE 'LOCK TABLE ONLY '||p_parent_table||' IN ACCESS EXCLUSIVE MODE NOWAIT';
                v_lock_obtained := TRUE;
            EXCEPTION
                WHEN lock_not_available THEN
                    PERFORM pg_sleep( p_lock_wait / 5.0 );
                    CONTINUE;
            END;
            EXIT WHEN v_lock_obtained;
        END LOOP;
        IF NOT v_lock_obtained THEN
            RAISE NOTICE 'Unable to obtain lock on parent table to remove trigger';
            RETURN -1;
        END IF;
    END IF; -- END p_lock_wait IF
    EXECUTE 'DROP TRIGGER IF EXISTS '||v_trig_name||' ON '||p_parent_table;
END IF; -- END trigger IF
v_lock_obtained := FALSE; -- reset for reuse later

EXECUTE 'DROP FUNCTION IF EXISTS '||v_function_name||'()';

IF v_jobmon_schema IS NOT NULL THEN
    PERFORM update_step(v_step_id, 'OK', 'Stopped partition creation process. Removed trigger & trigger function');
END IF;

<<outer_child_loop>>
WHILE v_batch_loop_count < p_batch_count LOOP 
    SELECT n.nspname||'.'||c.relname INTO v_child_table
    FROM pg_inherits i 
    JOIN pg_class c ON i.inhrelid = c.oid 
    JOIN pg_namespace n ON c.relnamespace = n.oid 
    WHERE i.inhparent::regclass = p_parent_table::regclass 
    ORDER BY i.inhrelid ASC;

    EXIT WHEN v_child_table IS NULL;

    IF v_jobmon_schema IS NOT NULL THEN
        v_step_id := add_step(v_job_id, 'Removing child partition: '||v_child_table);
    END IF;

    EXECUTE 'SELECT min('||v_control||') FROM '||v_child_table INTO v_child_min;
    IF v_child_min IS NULL THEN
        -- No rows left in this child table. Remove from partition set.

        -- lockwait timeout for table drop
        IF p_lock_wait > 0  THEN
            v_lock_iter := 0;
            WHILE v_lock_iter <= 5 LOOP
                v_lock_iter := v_lock_iter + 1;
                BEGIN
                    EXECUTE 'LOCK TABLE ONLY '||v_child_table||' IN ACCESS EXCLUSIVE MODE NOWAIT';
                    v_lock_obtained := TRUE;
                EXCEPTION
                    WHEN lock_not_available THEN
                        PERFORM pg_sleep( p_lock_wait / 5.0 );
                        CONTINUE;
                END;
                EXIT WHEN v_lock_obtained;
            END LOOP;
            IF NOT v_lock_obtained THEN
                RAISE NOTICE 'Unable to obtain lock on child table for removal from partition set';
                RETURN -1;
            END IF;
        END IF; -- END p_lock_wait IF
        v_lock_obtained := FALSE; -- reset for reuse later

        EXECUTE 'ALTER TABLE '||v_child_table||' NO INHERIT ' || p_parent_table;
        IF p_keep_table = false THEN
            EXECUTE 'DROP TABLE '||v_child_table;
            IF v_jobmon_schema IS NOT NULL THEN
                PERFORM update_step(v_step_id, 'OK', 'Child table DROPPED. Moved '||v_child_loop_total||' rows to parent');
            END IF;
        ELSE
            IF v_jobmon_schema IS NOT NULL THEN
                PERFORM update_step(v_step_id, 'OK', 'Child table UNINHERITED, not DROPPED. Moved '||v_child_loop_total||' rows to parent');
            END IF;
        END IF;
        v_undo_count := v_undo_count + 1;
        CONTINUE outer_child_loop;
    END IF;
    v_inner_loop_count := 1;
    v_child_loop_total := 0;
    <<inner_child_loop>>
    LOOP
        -- do some locking with timeout, if required
        IF p_lock_wait > 0  THEN
            v_lock_iter := 0;
            WHILE v_lock_iter <= 5 LOOP
                v_lock_iter := v_lock_iter + 1;
                BEGIN
                    EXECUTE 'SELECT * FROM ' || v_child_table ||
                    ' WHERE '||v_control||' <= '||quote_literal(v_child_min + (p_batch_interval * v_inner_loop_count))
                    ||' FOR UPDATE NOWAIT';
                    v_lock_obtained := TRUE;
                EXCEPTION
                    WHEN lock_not_available THEN
                        PERFORM pg_sleep( p_lock_wait / 5.0 );
                        CONTINUE;
                END;
                EXIT WHEN v_lock_obtained;
            END LOOP;
            IF NOT v_lock_obtained THEN
               RAISE NOTICE 'Unable to obtain lock on batch of rows to move';
               RETURN -1;
            END IF;
        END IF;

        -- Get everything from the current child minimum up to the multiples of the given interval
        v_move_sql := 'WITH move_data AS (DELETE FROM '||v_child_table||
                ' WHERE '||v_control||' <= '||quote_literal(v_child_min + (p_batch_interval * v_inner_loop_count))||' RETURNING *)
            INSERT INTO '||p_parent_table||' SELECT * FROM move_data';
        EXECUTE v_move_sql;
        GET DIAGNOSTICS v_rowcount = ROW_COUNT;
        v_total := v_total + v_rowcount;
        v_child_loop_total := v_child_loop_total + v_rowcount;
        IF v_jobmon_schema IS NOT NULL THEN
            PERFORM update_step(v_step_id, 'OK', 'Moved '||v_child_loop_total||' rows to parent.');
        END IF;
        EXIT inner_child_loop WHEN v_rowcount = 0; -- exit before loop incr if table is empty
        v_inner_loop_count := v_inner_loop_count + 1;
        v_batch_loop_count := v_batch_loop_count + 1;
        EXIT outer_child_loop WHEN v_batch_loop_count >= p_batch_count; -- Exit outer FOR loop if p_batch_count is reached
    END LOOP inner_child_loop;
END LOOP outer_child_loop;

IF v_batch_loop_count < p_batch_count THEN
    -- FOR loop never ran, so there's no child tables left.
    DELETE FROM @extschema@.part_config WHERE parent_table = p_parent_table;
    IF v_jobmon_schema IS NOT NULL THEN
        v_step_id := add_step(v_job_id, 'Removing config from pg_partman');
        PERFORM update_step(v_step_id, 'OK', 'Done');
    END IF;
END IF;

RAISE NOTICE 'Copied % row(s) to the parent. Removed % partitions.', v_total, v_undo_count;
IF v_jobmon_schema IS NOT NULL THEN
    v_step_id := add_step(v_job_id, 'Final stats');
    PERFORM update_step(v_step_id, 'OK', 'Copied '||v_total||' row(s) to the parent. Removed '||v_undo_count||' partitions.');
END IF;

IF v_jobmon_schema IS NOT NULL THEN
    PERFORM close_job(v_job_id);
    EXECUTE 'SELECT set_config(''search_path'','''||v_old_search_path||''',''false'')';
END IF;

RETURN v_total;

EXCEPTION
    WHEN OTHERS THEN
        IF v_jobmon_schema IS NOT NULL THEN
            IF v_job_id IS NULL THEN
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_job(''PARTMAN UNDO PARTITIONING: '||p_parent_table||''')' INTO v_job_id;
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_step('||v_job_id||', ''EXCEPTION before job logging started'')' INTO v_step_id;
            ELSIF v_step_id IS NULL THEN
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_step('||v_job_id||', ''EXCEPTION before first step logged'')' INTO v_step_id;
            END IF;
            EXECUTE 'SELECT '||v_jobmon_schema||'.update_step('||v_step_id||', ''CRITICAL'', ''ERROR: '||coalesce(SQLERRM,'unknown')||''')';
            EXECUTE 'SELECT '||v_jobmon_schema||'.fail_job('||v_job_id||')';
        END IF;
        RAISE EXCEPTION '%', SQLERRM;
END
$$;


/*
 * Function to undo id-based partitioning created by this extension
 */
CREATE OR REPLACE FUNCTION undo_partition_id(p_parent_table text, p_batch_count int DEFAULT 1, p_batch_interval bigint DEFAULT NULL, p_keep_table boolean DEFAULT true, p_lock_wait numeric DEFAULT 0) RETURNS bigint
    LANGUAGE plpgsql SECURITY DEFINER
    AS $$
DECLARE

v_adv_lock              boolean;
v_batch_loop_count      int := 0;
v_child_loop_total      bigint := 0;
v_child_min             bigint;
v_child_table           text;
v_control               text;
v_exists                int;
v_function_name         text;
v_inner_loop_count      int;
v_job_id                bigint;
v_jobmon                boolean;
v_jobmon_schema         text;
v_lock_iter             int := 1;
v_lock_obtained         boolean := FALSE;
v_move_sql              text;
v_old_search_path       text;
v_parent_schema         text;
v_parent_tablename      text;
v_part_interval         bigint;
v_row                   record;
v_rowcount              bigint;
v_step_id               bigint;
v_sub_count             int;
v_trig_name             text;
v_total                 bigint := 0;
v_undo_count            int := 0;

BEGIN

v_adv_lock := pg_try_advisory_xact_lock(hashtext('pg_partman undo_id_partition'));
IF v_adv_lock = 'false' THEN
    RAISE NOTICE 'undo_id_partition already running.';
    RETURN 0;
END IF;

SELECT part_interval::bigint
    , control
    , jobmon
INTO v_part_interval
    , v_control
    , v_jobmon
FROM @extschema@.part_config 
WHERE parent_table = p_parent_table 
AND (type = 'id-static' OR type = 'id-dynamic');

IF v_part_interval IS NULL THEN
    RAISE EXCEPTION 'Configuration for given parent table not found: %', p_parent_table;
END IF;

-- Check if any child tables are themselves partitioned or part of an inheritance tree. Prevent undo at this level if so.
-- Need to either lock child tables at all levels or handle the proper removal of triggers on all child tables first 
--  before multi-level undo can be performed safely.
FOR v_row IN 
    SELECT show_partitions AS child_table FROM @extschema@.show_partitions(p_parent_table)
LOOP
    SELECT count(*) INTO v_sub_count 
    FROM pg_catalog.pg_inherits
    WHERE inhparent::regclass = v_row.child_table::regclass;
    IF v_sub_count > 0 THEN
        RAISE EXCEPTION 'Child table for this parent has child table(s) itself (%). Run undo partitioning on this table or remove inheritance first to ensure all data is properly moved to parent', v_row.child_table;
    END IF;
END LOOP;

IF v_jobmon THEN
    SELECT nspname INTO v_jobmon_schema FROM pg_namespace n, pg_extension e WHERE e.extname = 'pg_jobmon' AND e.extnamespace = n.oid;
    IF v_jobmon_schema IS NOT NULL THEN
        SELECT current_setting('search_path') INTO v_old_search_path;
        EXECUTE 'SELECT set_config(''search_path'',''@extschema@,'||v_jobmon_schema||''',''false'')';
    END IF;
END IF;

IF v_jobmon_schema IS NOT NULL THEN
    v_job_id := add_job('PARTMAN UNDO PARTITIONING: '||p_parent_table);
    v_step_id := add_step(v_job_id, 'Undoing partitioning for table '||p_parent_table);
END IF;

IF p_batch_interval IS NULL THEN
    p_batch_interval := v_part_interval;
END IF;

-- Stops new time partitons from being made as well as stopping child tables from being dropped if they were configured with a retention period.
UPDATE @extschema@.part_config SET undo_in_progress = true WHERE parent_table = p_parent_table;
-- Stop data going into child tables and stop new id partitions from being made.
SELECT schemaname, tablename INTO v_parent_schema, v_parent_tablename FROM pg_tables WHERE schemaname ||'.'|| tablename = p_parent_table;
v_trig_name := @extschema@.check_name_length(p_object_name := v_parent_tablename, p_suffix := '_part_trig'); 
v_function_name := @extschema@.check_name_length(v_parent_tablename, v_parent_schema, '_part_trig_func', FALSE);

SELECT tgname INTO v_trig_name FROM pg_catalog.pg_trigger t WHERE tgname = v_trig_name;
IF v_trig_name IS NOT NULL THEN
    -- lockwait for trigger drop
    IF p_lock_wait > 0  THEN
        v_lock_iter := 0;
        WHILE v_lock_iter <= 5 LOOP
            v_lock_iter := v_lock_iter + 1;
            BEGIN
                EXECUTE 'LOCK TABLE ONLY '||p_parent_table||' IN ACCESS EXCLUSIVE MODE NOWAIT';
                v_lock_obtained := TRUE;
            EXCEPTION
                WHEN lock_not_available THEN
                    PERFORM pg_sleep( p_lock_wait / 5.0 );
                    CONTINUE;
            END;
            EXIT WHEN v_lock_obtained;
        END LOOP;
        IF NOT v_lock_obtained THEN
            RAISE NOTICE 'Unable to obtain lock on parent table to remove trigger';
            RETURN -1;
        END IF;
    END IF; -- END p_lock_wait IF
    EXECUTE 'DROP TRIGGER IF EXISTS '||v_trig_name||' ON '||p_parent_table;
END IF; -- END trigger IF
v_lock_obtained := FALSE; -- reset for reuse later

EXECUTE 'DROP FUNCTION IF EXISTS '||v_function_name||'()';

IF v_jobmon_schema IS NOT NULL THEN
    PERFORM update_step(v_step_id, 'OK', 'Stopped partition creation process. Removed trigger & trigger function');
END IF;

<<outer_child_loop>>
WHILE v_batch_loop_count < p_batch_count LOOP 
    SELECT n.nspname||'.'||c.relname INTO v_child_table
    FROM pg_inherits i 
    JOIN pg_class c ON i.inhrelid = c.oid 
    JOIN pg_namespace n ON c.relnamespace = n.oid 
    WHERE i.inhparent::regclass = p_parent_table::regclass 
    ORDER BY i.inhrelid ASC;

    EXIT WHEN v_child_table IS NULL;

    IF v_jobmon_schema IS NOT NULL THEN
        v_step_id := add_step(v_job_id, 'Removing child partition: '||v_child_table);
    END IF;

    EXECUTE 'SELECT min('||v_control||') FROM '||v_child_table INTO v_child_min;
    IF v_child_min IS NULL THEN
        -- No rows left in this child table. Remove from partition set.

        -- lockwait timeout for table drop
        IF p_lock_wait > 0  THEN
            v_lock_iter := 0;
            WHILE v_lock_iter <= 5 LOOP
                v_lock_iter := v_lock_iter + 1;
                BEGIN
                    EXECUTE 'LOCK TABLE ONLY '||v_child_table||' IN ACCESS EXCLUSIVE MODE NOWAIT';
                    v_lock_obtained := TRUE;
                EXCEPTION
                    WHEN lock_not_available THEN
                        PERFORM pg_sleep( p_lock_wait / 5.0 );
                        CONTINUE;
                END;
                EXIT WHEN v_lock_obtained;
            END LOOP;
            IF NOT v_lock_obtained THEN
                RAISE NOTICE 'Unable to obtain lock on child table for removal from partition set';
                RETURN -1;
            END IF;
        END IF; -- END p_lock_wait IF
        v_lock_obtained := FALSE; -- reset for reuse later

        EXECUTE 'ALTER TABLE '||v_child_table||' NO INHERIT ' || p_parent_table;
        IF p_keep_table = false THEN
            EXECUTE 'DROP TABLE '||v_child_table;
            IF v_jobmon_schema IS NOT NULL THEN
                PERFORM update_step(v_step_id, 'OK', 'Child table DROPPED. Moved '||v_child_loop_total||' rows to parent');
            END IF;
        ELSE
            IF v_jobmon_schema IS NOT NULL THEN
                PERFORM update_step(v_step_id, 'OK', 'Child table UNINHERITED, not DROPPED. Moved '||v_child_loop_total||' rows to parent');
            END IF;
        END IF;
        v_undo_count := v_undo_count + 1;
        CONTINUE outer_child_loop;
    END IF;
    v_inner_loop_count := 1;
    v_child_loop_total := 0;
    <<inner_child_loop>>
    LOOP
        -- lockwait timeout for row batches
        IF p_lock_wait > 0  THEN
            v_lock_iter := 0;
            WHILE v_lock_iter <= 5 LOOP
                v_lock_iter := v_lock_iter + 1;
                BEGIN
                    EXECUTE 'SELECT * FROM ' || v_child_table ||
                    ' WHERE '||v_control||' <= '||quote_literal(v_child_min + (p_batch_interval * v_inner_loop_count))
                    ||' FOR UPDATE NOWAIT';
                    v_lock_obtained := TRUE;
                EXCEPTION
                    WHEN lock_not_available THEN
                        PERFORM pg_sleep( p_lock_wait / 5.0 );
                        CONTINUE;
                END;
                EXIT WHEN v_lock_obtained;
            END LOOP;
            IF NOT v_lock_obtained THEN
               RAISE NOTICE 'Unable to obtain lock on batch of rows to move';
               RETURN -1;
            END IF;
        END IF;

        -- Get everything from the current child minimum up to the multiples of the given interval
        v_move_sql := 'WITH move_data AS (DELETE FROM '||v_child_table||
                ' WHERE '||v_control||' <= '||quote_literal(v_child_min + (p_batch_interval * v_inner_loop_count))||' RETURNING *)
            INSERT INTO '||p_parent_table||' SELECT * FROM move_data';
        EXECUTE v_move_sql;
        GET DIAGNOSTICS v_rowcount = ROW_COUNT;
        v_total := v_total + v_rowcount;
        v_child_loop_total := v_child_loop_total + v_rowcount;
        IF v_jobmon_schema IS NOT NULL THEN
            PERFORM update_step(v_step_id, 'OK', 'Moved '||v_child_loop_total||' rows to parent.');
        END IF;
        EXIT inner_child_loop WHEN v_rowcount = 0; -- exit before loop incr if table is empty
        v_inner_loop_count := v_inner_loop_count + 1;
        v_batch_loop_count := v_batch_loop_count + 1;
        EXIT outer_child_loop WHEN v_batch_loop_count >= p_batch_count; -- Exit outer FOR loop if p_batch_count is reached
    END LOOP inner_child_loop;
END LOOP outer_child_loop;

IF v_batch_loop_count < p_batch_count THEN
    -- FOR loop never ran, so there's no child tables left.
    DELETE FROM @extschema@.part_config WHERE parent_table = p_parent_table;
    IF v_jobmon_schema IS NOT NULL THEN
        v_step_id := add_step(v_job_id, 'Removing config from pg_partman');
        PERFORM update_step(v_step_id, 'OK', 'Done');
    END IF;
END IF;

RAISE NOTICE 'Copied % row(s) to the parent. Removed % partitions.', v_total, v_undo_count;
IF v_jobmon_schema IS NOT NULL THEN
    v_step_id := add_step(v_job_id, 'Final stats');
    PERFORM update_step(v_step_id, 'OK', 'Copied '||v_total||' row(s) to the parent. Removed '||v_undo_count||' partitions.');
END IF;

IF v_jobmon_schema IS NOT NULL THEN
    PERFORM close_job(v_job_id);
    EXECUTE 'SELECT set_config(''search_path'','''||v_old_search_path||''',''false'')';
END IF;

RETURN v_total;

EXCEPTION
    WHEN OTHERS THEN
        IF v_jobmon_schema IS NOT NULL THEN
            IF v_job_id IS NULL THEN
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_job(''PARTMAN UNDO PARTITIONING: '||p_parent_table||''')' INTO v_job_id;
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_step('||v_job_id||', ''EXCEPTION before job logging started'')' INTO v_step_id;
            ELSIF v_step_id IS NULL THEN
                EXECUTE 'SELECT '||v_jobmon_schema||'.add_step('||v_job_id||', ''EXCEPTION before first step logged'')' INTO v_step_id;
            END IF;
            EXECUTE 'SELECT '||v_jobmon_schema||'.update_step('||v_step_id||', ''CRITICAL'', ''ERROR: '||coalesce(SQLERRM,'unknown')||''')';
            EXECUTE 'SELECT '||v_jobmon_schema||'.fail_job('||v_job_id||')';
        END IF;
        RAISE EXCEPTION '%', SQLERRM;
END
$$;


-- Restore dropped object privileges
DO $$
DECLARE
v_row   record;
BEGIN
    FOR v_row IN SELECT statement FROM partman_preserve_privs_temp LOOP
        IF v_row.statement IS NOT NULL THEN
            EXECUTE v_row.statement;
        END IF;
    END LOOP;
END
$$;

DROP TABLE IF EXISTS partman_preserve_privs_temp;