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
|
\set ECHO none
set_sphere_output_precision
-----------------------------
SET 8
(1 row)
-- without idx
SELECT count(*) FROM spheretmp1 WHERE p @ scircle '<(1,1),0.3>';
count
-------
32
(1 row)
SELECT count(*) FROM spheretmp1 WHERE p = spoint '(3.09 , 1.25)' ;
count
-------
4
(1 row)
SELECT count(*) FROM spheretmp2 WHERE c @ scircle '<(1,1),0.3>';
count
-------
12
(1 row)
SELECT count(*) FROM spheretmp2 WHERE c && scircle '<(1,1),0.3>';
count
-------
48
(1 row)
SELECT count(*) FROM spheretmp3 WHERE b && scircle '<(1,1),0.3>';
count
-------
28
(1 row)
SELECT count(*) FROM spheretmp3 WHERE spoint '(3.09 , 1.25)' @ b ;
count
-------
1
(1 row)
SELECT count(*) FROM spheretmp4 WHERE l @ scircle '<(1,1),0.3>';
count
-------
8
(1 row)
SELECT count(*) FROM spheretmp4 WHERE l && scircle '<(1,1),0.3>';
count
-------
40
(1 row)
-- create idx
CREATE TABLE spheretmp1b AS TABLE spheretmp1;
ANALYZE spheretmp1;
CREATE INDEX aaaidx ON spheretmp1 USING gist ( p );
CREATE INDEX spoint3_idx ON spheretmp1b USING gist (p spoint3);
CREATE INDEX bbbidx ON spheretmp2 USING gist ( c );
CREATE INDEX cccidx ON spheretmp3 USING gist ( b );
CREATE INDEX dddidx ON spheretmp4 USING gist ( l );
--with idx
SET enable_seqscan = OFF ;
SELECT count(*) FROM spheretmp1 WHERE p @ scircle '<(1,1),0.3>';
count
-------
32
(1 row)
SELECT count(*) FROM spheretmp1b WHERE p @ scircle '<(1,1),0.3>';
count
-------
32
(1 row)
SELECT count(*) FROM spheretmp1 WHERE p <@ scircle '<(1,1),0.3>';
count
-------
32
(1 row)
SELECT count(*) FROM spheretmp1b WHERE p <@ scircle '<(1,1),0.3>';
count
-------
32
(1 row)
SELECT count(*) FROM spheretmp1 WHERE p = spoint '(3.09 , 1.25)' ;
count
-------
4
(1 row)
SELECT count(*) FROM spheretmp1b WHERE p = spoint '(3.09 , 1.25)' ;
count
-------
4
(1 row)
SELECT count(*) FROM spheretmp2 WHERE c @ scircle '<(1,1),0.3>' ;
count
-------
12
(1 row)
SELECT count(*) FROM spheretmp2 WHERE c && scircle '<(1,1),0.3>' ;
count
-------
48
(1 row)
SELECT count(*) FROM spheretmp3 WHERE b && scircle '<(1,1),0.3>';
count
-------
28
(1 row)
SELECT count(*) FROM spheretmp3 WHERE spoint '(3.09 , 1.25)' @ b ;
count
-------
1
(1 row)
SELECT count(*) FROM spheretmp4 WHERE l @ scircle '<(1,1),0.3>' ;
count
-------
8
(1 row)
SELECT count(*) FROM spheretmp4 WHERE l && scircle '<(1,1),0.3>' ;
count
-------
40
(1 row)
-- test spoint3 operator class with and without index-only scan
SET enable_bitmapscan = OFF;
SET enable_indexonlyscan = ON;
EXPLAIN (COSTS OFF) SELECT count(*) FROM spheretmp1b WHERE p <@ scircle '<(1,1),0.3>';
QUERY PLAN
--------------------------------------------------------
Aggregate
-> Index Only Scan using spoint3_idx on spheretmp1b
Index Cond: (p <@ '<(1 , 1) , 0.3>'::scircle)
(3 rows)
SELECT count(*) FROM spheretmp1b WHERE p <@ scircle '<(1,1),0.3>';
count
-------
32
(1 row)
EXPLAIN (COSTS OFF) SELECT count(*) FROM spheretmp1b WHERE p = spoint '(3.09 , 1.25)';
QUERY PLAN
--------------------------------------------------------
Aggregate
-> Index Only Scan using spoint3_idx on spheretmp1b
Index Cond: (p = '(3.09 , 1.25)'::spoint)
(3 rows)
SELECT count(*) FROM spheretmp1b WHERE p = spoint '(3.09 , 1.25)';
count
-------
4
(1 row)
SET enable_indexonlyscan = OFF;
EXPLAIN (COSTS OFF) SELECT count(*) FROM spheretmp1b WHERE p <@ scircle '<(1,1),0.3>';
QUERY PLAN
-------------------------------------------------------
Aggregate
-> Index Scan using spoint3_idx on spheretmp1b
Index Cond: (p <@ '<(1 , 1) , 0.3>'::scircle)
(3 rows)
SELECT count(*) FROM spheretmp1b WHERE p <@ scircle '<(1,1),0.3>';
count
-------
32
(1 row)
EXPLAIN (COSTS OFF) SELECT count(*) FROM spheretmp1b WHERE p = spoint '(3.09 , 1.25)';
QUERY PLAN
---------------------------------------------------
Aggregate
-> Index Scan using spoint3_idx on spheretmp1b
Index Cond: (p = '(3.09 , 1.25)'::spoint)
(3 rows)
SELECT count(*) FROM spheretmp1b WHERE p = spoint '(3.09 , 1.25)';
count
-------
4
(1 row)
-- test hash opclass
CREATE TABLE spheretmp1c AS TABLE spheretmp1;
SELECT p FROM spheretmp1c WHERE p <@ scircle '<(1,1),0.2>' ORDER BY p::text;
p
---------------
(0.67 , 0.97)
(0.67 , 0.97)
(0.67 , 0.97)
(0.67 , 0.97)
(1.07 , 1.09)
(1.07 , 1.09)
(1.07 , 1.09)
(1.07 , 1.09)
(1.24 , 0.95)
(1.24 , 0.95)
(1.24 , 0.95)
(1.24 , 0.95)
(12 rows)
WITH points AS (SELECT DISTINCT p FROM spheretmp1c WHERE p <@ scircle '<(1,1),0.2>')
SELECT p FROM points ORDER BY p::text;
p
---------------
(0.67 , 0.97)
(1.07 , 1.09)
(1.24 , 0.95)
(3 rows)
CREATE INDEX spheretmp1c_hash_idx ON spheretmp1c USING hash(p);
EXPLAIN (COSTS OFF) SELECT * FROM spheretmp1c WHERE p = '(0.67 , 0.97)';
QUERY PLAN
------------------------------------------------------
Index Scan using spheretmp1c_hash_idx on spheretmp1c
Index Cond: (p = '(0.67 , 0.97)'::spoint)
(2 rows)
|
