3 # The author disclaims copyright to this source code. In place of
4 # a legal notice, here is a blessing:
6 # May you do good and not evil.
7 # May you find forgiveness for yourself and forgive others.
8 # May you share freely, never taking more than you give.
10 #***********************************************************************
12 # This file implements tests for the logic used to estimate when
13 # running ANALYZE would be beneficial.
15 # Note that this test uses some hard-coded bitmask values from sqliteInt.h.
16 # If any of the following constants changes:
18 # define TF_HasStat1 0x0010
19 # define TF_StatsUsed 0x0100
21 # then some of the magic numbers in test results below might need to be
25 set testdir [file dirname $argv0]
26 source $testdir/tester.tcl
28 # There is nothing to test if ANALYZE is disable for this build.
29 # These tests also use "PRAGMA stats" which are only enabled for
32 ifcapable {!debug || !analyze || !vtab} {
37 do_execsql_test autoanalyze1-100 {
38 -- Build up a test table with some indexes
39 CREATE TABLE t1(a INTEGER PRIMARY KEY, b, c, d);
40 CREATE UNIQUE INDEX t1bc ON t1(b,c);
41 CREATE INDEX t1d ON t1(d);
42 WITH RECURSIVE c(x) AS (VALUES(1) UNION ALL SELECT x+1 FROM c WHERE x<100)
43 INSERT INTO t1(a,b,c,d) SELECT x, x, x, x FROM c;
44 -- Verify that the hasStat1 flag is clear on on indexes
45 SELECT idx, flgs FROM pragma_stats
48 -- Verify that the TF_HasStat1 flag is clear on the table
49 SELECT tbl, (flgs & 0x10)!=0 FROM pragma_stats WHERE tbl='t1' AND idx IS NULL;
52 # No use of stat1 recorded so far
53 do_execsql_test autoanalyze1-110 {
54 SELECT (flgs & 0x0100)!=0 FROM pragma_stats WHERE tbl='t1' AND idx IS NULL;
57 # Access using a unique index does not set the TF_StatsUsed flag.
59 do_execsql_test autoanalyze1-200 {
60 SELECT * FROM t1 WHERE a=55;
62 do_execsql_test autoanalyze1-201 {
63 SELECT (flgs & 0x0100)!=0 FROM pragma_stats WHERE tbl='t1' AND idx IS NULL;
66 do_execsql_test autoanalyze1-210 {
67 SELECT * FROM t1 WHERE a IN (55,199,299);
69 do_execsql_test autoanalyze1-211 {
70 SELECT (flgs & 0x0100)!=0 FROM pragma_stats WHERE tbl='t1' AND idx IS NULL;
73 do_execsql_test autoanalyze1-220 {
74 SELECT * FROM t1 WHERE (b,c)=(45,45);
76 do_execsql_test autoanalyze1-221 {
77 SELECT (flgs & 0x0100)!=0 FROM pragma_stats WHERE tbl='t1' AND idx IS NULL;
80 # Any use of the non-unique t1d index triggers the use of stats.
83 do_execsql_test autoanalyze1-300 {
84 SELECT * FROM t1 WHERE d=45;
86 do_execsql_test autoanalyze1-301 {
87 SELECT (flgs & 0x0100)!=0 FROM pragma_stats WHERE tbl='t1' AND idx IS NULL;
91 do_execsql_test autoanalyze1-310 {
92 SELECT * FROM t1 WHERE d=45 AND a=45;
94 do_execsql_test autoanalyze1-311 {
95 SELECT (flgs & 0x0100)!=0 FROM pragma_stats WHERE tbl='t1' AND idx IS NULL;
96 } {0} ;# The ROWID lookup short-circuits the d=45 constraint
99 do_execsql_test autoanalyze1-320 {
100 SELECT * FROM t1 WHERE d=45 AND a IN (45,46);
102 do_execsql_test autoanalyze1-321 {
103 SELECT (flgs & 0x0100)!=0 FROM pragma_stats WHERE tbl='t1' AND idx IS NULL;
106 # Any use of prefix of a unique index triggers the use of stats
109 do_execsql_test autoanalyze1-400 {
110 SELECT * FROM t1 WHERE b=45;
112 do_execsql_test autoanalyze1-401 {
113 SELECT (flgs & 0x0100)!=0 FROM pragma_stats WHERE tbl='t1' AND idx IS NULL;
116 # The TF_StatsUsed flag is reset when the database is reopened
119 do_execsql_test autoanalyze1-500 {
120 SELECT (flgs & 0x0100)!=0 FROM pragma_stats WHERE tbl='t1' AND idx IS NULL;