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
|
#!/usr/bin/env tarantool
test = require("sqltester")
test:plan(20)
testprefix = "analyzeC"
--!./tcltestrunner.lua
-- 2014-07-22
--
-- The author disclaims copyright to this source code. In place of
-- a legal notice, here is a blessing:
--
-- May you do good and not evil.
-- May you find forgiveness for yourself and forgive others.
-- May you share freely, never taking more than you give.
--
-------------------------------------------------------------------------
--
-- This file contains automated tests used to verify that the text terms
-- at the end of "_sql_stat1".stat are processed correctly.
--
-- (1) "unordered" means that the index cannot be used for ORDER BY
-- or for range queries
--
-- (2) "sz=NNN" sets the relative size of the index entries
--
-- (3) All other fields are silently ignored
--
-- Baseline case. Range queries work OK. Indexes can be used for
-- ORDER BY.
test:do_execsql_test(
1.0,
[[
DROP TABLE IF EXISTS t1;
CREATE TABLE t1(a INT PRIMARY KEY, b INT , c INT , d INT );
INSERT INTO t1(a,b,c,d) VALUES(1,1,2,3),(2,7,8,9),(3,4,5,6),(4,10,11,12),(5,4,8,12),(6,1,11,111);
CREATE INDEX t1b ON t1(b);
CREATE INDEX t1c ON t1(c);
ANALYZE;
DELETE FROM "_sql_stat1";
INSERT INTO "_sql_stat1"("tbl","idx","stat") VALUES('t1','t1b','12345 2'),('t1','t1c','12345 4');
ANALYZE;
SELECT b,c,d, '#' FROM t1 WHERE b BETWEEN 3 AND 8 ORDER BY d;
]], {
-- <1.0>
4, 5, 6, "#", 7, 8, 9, "#", 4, 8, 12, "#"
-- </1.0>
})
test:do_execsql_test(
1.1,
[[
EXPLAIN QUERY PLAN SELECT b, c, d, '#' FROM t1 WHERE b BETWEEN 3 AND 8 ORDER BY d;
]], {
-- <1.1>
0, 0, 0, "SEARCH TABLE T1 USING COVERING INDEX T1B (B>? AND B<?)",
0, 0, 0, "USE TEMP B-TREE FOR ORDER BY"
-- </1.1>
})
test:do_execsql_test(
1.2,
[[
SELECT d FROM t1 ORDER BY b;
]], {
-- <1.2>
3, 111, 6, 12, 9, 12
-- </1.2>
})
test:do_execsql_test(
1.3,
[[
EXPLAIN QUERY PLAN SELECT d FROM t1 ORDER BY b;
]], {
-- <1.3>
0, 0, 0, "SCAN TABLE T1 USING COVERING INDEX T1B"
-- </1.3>
})
-- Now mark the t1a index as "unordered". Range queries and ORDER BY no
-- longer use the index, but equality queries do.
--
test:do_execsql_test(
2.0,
[[
UPDATE "_sql_stat1" SET "stat"='12345 2 unordered' WHERE "idx"='t1b';
ANALYZE;
SELECT b, c, d, '#' FROM t1 WHERE b BETWEEN 3 AND 8 ORDER BY d;
]], {
-- <2.0>
4, 5, 6, "#", 7, 8, 9, "#", 4, 8, 12, "#"
-- </2.0>
})
test:do_execsql_test(
2.1,
[[
EXPLAIN QUERY PLAN SELECT b, c, d, '#' FROM t1 WHERE b BETWEEN 3 AND 8 ORDER BY d;
]], {
-- <2.1>
0, 0, 0, "SEARCH TABLE T1 USING COVERING INDEX T1B (B>? AND B<?)",
0, 0, 0, "USE TEMP B-TREE FOR ORDER BY"
-- </2.1>
})
test:do_execsql_test(
2.2,
[[
SELECT d FROM t1 ORDER BY b;
]], {
-- <2.2>
3, 111, 6, 12, 9, 12
-- </2.2>
})
test:do_execsql_test(
2.3,
[[
EXPLAIN QUERY PLAN SELECT d FROM t1 ORDER BY b;
]], {
-- <2.3>
0, 0, 0, "SCAN TABLE T1 USING COVERING INDEX T1B"
-- </2.3>
})
-- Ignore extraneous text parameters in the "_sql_stat1".stat field.
--
test:do_execsql_test(
3.0,
[[
UPDATE "_sql_stat1" SET "stat"='12345 2 whatever=5 unordered xyzzy=11' WHERE "idx"='t1b';
ANALYZE;
SELECT b, c, d, '#' FROM t1 WHERE b BETWEEN 3 AND 8 ORDER BY d;
]], {
-- <3.0>
4, 5, 6, "#", 7, 8, 9, "#", 4, 8, 12, "#"
-- </3.0>
})
test:do_execsql_test(
3.1,
[[
EXPLAIN QUERY PLAN SELECT b, c, d, '#' FROM t1 WHERE b BETWEEN 3 AND 8 ORDER BY d;
]], {
-- <3.1>
0, 0, 0, "SEARCH TABLE T1 USING COVERING INDEX T1B (B>? AND B<?)",
0, 0, 0, "USE TEMP B-TREE FOR ORDER BY"
-- </3.1>
})
test:do_execsql_test(
3.2,
[[
SELECT d FROM t1 ORDER BY b;
]], {
-- <3.2>
3, 111, 6, 12, 9, 12
-- </3.2>
})
test:do_execsql_test(
3.3,
[[
EXPLAIN QUERY PLAN SELECT d FROM t1 ORDER BY b;
]], {
-- <3.3>
0, 0, 0, "SCAN TABLE T1 USING COVERING INDEX T1B"
-- </3.3>
})
-- The sz=NNN parameter determines which index to scan
--
test:do_execsql_test(
4.0,
[[
DROP INDEX t1b ON t1;
CREATE INDEX t1bc ON t1(b,c);
CREATE INDEX t1db ON t1(d,b);
DELETE FROM "_sql_stat1";
INSERT INTO "_sql_stat1"("tbl","idx","stat") VALUES('t1','t1bc','12345 3 2 sz=10'),('t1','t1db','12345 3 2 sz=20');
ANALYZE;
SELECT count(b) FROM t1;
]], {
-- <4.0>
6
-- </4.0>
})
test:do_execsql_test(
4.1,
[[
EXPLAIN QUERY PLAN SELECT count(b) FROM t1;
]], {
-- <4.1>
0, 0, 0, "SCAN TABLE T1"
-- </4.1>
})
test:do_execsql_test(
4.2,
[[
DELETE FROM "_sql_stat1";
INSERT INTO "_sql_stat1"("tbl","idx","stat") VALUES('t1','t1bc','12345 3 2 sz=20'),('t1','t1db','12345 3 2 sz=10');
ANALYZE;
SELECT count(b) FROM t1;
]], {
-- <4.2>
6
-- </4.2>
})
test:do_execsql_test(
4.3,
[[
EXPLAIN QUERY PLAN SELECT count(b) FROM t1;
]], {
-- <4.3>
0, 0, 0, "SCAN TABLE T1"
-- </4.3>
})
-- The sz=NNN parameter works even if there is other extraneous text
-- in the sql_stat1.stat column.
--
test:do_execsql_test(
5.0,
[[
DELETE FROM "_sql_stat1";
INSERT INTO "_sql_stat1"("tbl","idx","stat")
VALUES('t1','t1bc','12345 3 2 x=5 sz=10 y=10'),
('t1','t1db','12345 3 2 whatever sz=20 junk');
ANALYZE;
SELECT count(b) FROM t1;
]], {
-- <5.0>
6
-- </5.0>
})
test:do_execsql_test(
5.1,
[[
EXPLAIN QUERY PLAN
SELECT count(b) FROM t1;
]], {
-- <5.1>
0, 0, 0, "SCAN TABLE T1"
-- </5.1>
})
test:do_execsql_test(
5.2,
[[
DELETE FROM "_sql_stat1";
INSERT INTO "_sql_stat1"("tbl","idx","stat") VALUES('t1','t1db','12345 3 2 x=5 sz=10 y=10'), ('t1','t1bc','12345 3 2 whatever sz=20 junk');
ANALYZE;
SELECT count(b) FROM t1;
]], {
-- <5.2>
6
-- </5.2>
})
test:do_execsql_test(
5.3,
[[
EXPLAIN QUERY PLAN SELECT count(b) FROM t1;
]], {
-- <5.3>
0, 0, 0, "SCAN TABLE T1"
-- </5.3>
})
test:finish_test()
|
