third_party/sqlite/sqlite-src-3080704/test/analyze6.test - Issue 2363173002: [sqlite] Remove obsolete reference version 3.8.7.4.

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Issue 2363173002: [sqlite] Remove obsolete reference version 3.8.7.4. (Closed)

Patch Set: Created 4 years, 3 months ago

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1 # 2011 March 3

2 #

3 # The author disclaims copyright to this source code. In place of

4 # a legal notice, here is a blessing:

5 #

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.

9 #

10 #***********************************************************************

11 #

12 # This file implements tests for SQLite library. The focus of the tests

13 # in this file a corner-case query planner optimization involving the

14 # join order of two tables of different sizes.

15 #

16

17 set testdir [file dirname $argv0]

18 source $testdir/tester.tcl

19

20 ifcapable !stat4&&!stat3 {

21 finish_test

22 return

23 }

24

25 set testprefix analyze6

26

27 proc eqp {sql {db db}} {

28 uplevel execsql [list "EXPLAIN QUERY PLAN $sql"] $db

29 }

30

31 do_test analyze6-1.0 {

32 db eval {

33 CREATE TABLE cat(x INT, yz TEXT);

34 CREATE UNIQUE INDEX catx ON cat(x);

35 /* Give cat 16 unique integers */

36 INSERT INTO cat(x) VALUES(1);

37 INSERT INTO cat(x) VALUES(2);

38 INSERT INTO cat(x) SELECT x+2 FROM cat;

39 INSERT INTO cat(x) SELECT x+4 FROM cat;

40 INSERT INTO cat(x) SELECT x+8 FROM cat;

41

42 CREATE TABLE ev(y INT);

43 CREATE INDEX evy ON ev(y);

44 /* ev will hold 32 copies of 16 integers found in cat */

45 INSERT INTO ev SELECT x FROM cat;

46 INSERT INTO ev SELECT x FROM cat;

47 INSERT INTO ev SELECT y FROM ev;

48 INSERT INTO ev SELECT y FROM ev;

49 INSERT INTO ev SELECT y FROM ev;

50 INSERT INTO ev SELECT y FROM ev;

51 ANALYZE;

52 SELECT count(*) FROM cat;

53 SELECT count(*) FROM ev;

54 }

55 } {16 512}

56

57 # The lowest cost plan is to scan CAT and for each integer there, do a single

58 # lookup of the first corresponding entry in EV then read off the equal values

59 # in EV. (Prior to the 2011-03-04 enhancement to where.c, this query would

60 # have used EV for the outer loop instead of CAT - which was about 3x slower.)

61 #

62 do_test analyze6-1.1 {

63 eqp {SELECT count(*) FROM ev, cat WHERE x=y}

64 } {0 0 1 {SCAN TABLE cat USING COVERING INDEX catx} 0 1 0 {SEARCH TABLE ev USING COVERING INDEX evy (y=?)}}

65

66 # The same plan is chosen regardless of the order of the tables in the

67 # FROM clause.

68 #

69 do_test analyze6-1.2 {

70 eqp {SELECT count(*) FROM cat, ev WHERE x=y}

71 } {0 0 0 {SCAN TABLE cat USING COVERING INDEX catx} 0 1 1 {SEARCH TABLE ev USING COVERING INDEX evy (y=?)}}

72

73

74 # Ticket [83ea97620bd3101645138b7b0e71c12c5498fe3d] 2011-03-30

75 # If ANALYZE is run on an empty table, make sure indices are used

76 # on the table.

77 #

78 do_test analyze6-2.1 {

79 execsql {

80 CREATE TABLE t201(x INTEGER PRIMARY KEY, y UNIQUE, z);

81 CREATE INDEX t201z ON t201(z);

82 ANALYZE;

83 }

84 eqp {SELECT * FROM t201 WHERE z=5}

85 } {0 0 0 {SEARCH TABLE t201 USING INDEX t201z (z=?)}}

86 do_test analyze6-2.2 {

87 eqp {SELECT * FROM t201 WHERE y=5}

88 } {0 0 0 {SEARCH TABLE t201 USING INDEX sqlite_autoindex_t201_1 (y=?)}}

89 do_test analyze6-2.3 {

90 eqp {SELECT * FROM t201 WHERE x=5}

91 } {0 0 0 {SEARCH TABLE t201 USING INTEGER PRIMARY KEY (rowid=?)}}

92 do_test analyze6-2.4 {

93 execsql {

94 INSERT INTO t201 VALUES(1,2,3),(2,3,4),(3,4,5);

95 ANALYZE t201;

96 }

97 eqp {SELECT * FROM t201 WHERE z=5}

98 } {0 0 0 {SEARCH TABLE t201 USING INDEX t201z (z=?)}}

99 do_test analyze6-2.5 {

100 eqp {SELECT * FROM t201 WHERE y=5}

101 } {0 0 0 {SEARCH TABLE t201 USING INDEX sqlite_autoindex_t201_1 (y=?)}}

102 do_test analyze6-2.6 {

103 eqp {SELECT * FROM t201 WHERE x=5}

104 } {0 0 0 {SEARCH TABLE t201 USING INTEGER PRIMARY KEY (rowid=?)}}

105 do_test analyze6-2.7 {

106 execsql {

107 INSERT INTO t201 VALUES(4,5,7);

108 INSERT INTO t201 SELECT x+100, y+100, z+100 FROM t201;

109 INSERT INTO t201 SELECT x+200, y+200, z+200 FROM t201;

110 INSERT INTO t201 SELECT x+400, y+400, z+400 FROM t201;

111 ANALYZE t201;

112 }

113 eqp {SELECT * FROM t201 WHERE z=5}

114 } {0 0 0 {SEARCH TABLE t201 USING INDEX t201z (z=?)}}

115 do_test analyze6-2.8 {

116 eqp {SELECT * FROM t201 WHERE y=5}

117 } {0 0 0 {SEARCH TABLE t201 USING INDEX sqlite_autoindex_t201_1 (y=?)}}

118 do_test analyze6-2.9 {

119 eqp {SELECT * FROM t201 WHERE x=5}

120 } {0 0 0 {SEARCH TABLE t201 USING INTEGER PRIMARY KEY (rowid=?)}}

121

122 finish_test

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