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Ensure the EXISTS->IN transformation preserves the collation sequence of the comparison operation.

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FossilOrigin-Name: a373baae12c914e48fd84de77998e301fdd3da43b06b9d64ac24a14418ed48cd
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dan
2021-01-15 15:32:09 +00:00
parent 9d326d6793
commit e8f7fcf6f4
4 changed files with 93 additions and 11 deletions
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78
test/exists2.test
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@ -71,7 +71,6 @@ do_execsql_eqp_test 1.4 {
1 one 3 three 5 five 7 seven
}
breakpoint
do_execsql_eqp_test 1.5 {
SELECT t1.* FROM t1 WHERE EXISTS(
SELECT * FROM t2 WHERE t1.a=t2.c AND d IN (1, 2, 3)
@ -82,6 +81,83 @@ do_execsql_eqp_test 1.5 {
1 one 3 three 5 five
}
do_execsql_eqp_test 1.6 {
SELECT t1.* FROM t1 WHERE EXISTS(
SELECT * FROM t2 WHERE d IN (1, 2, 3)AND t1.a=t2.c
);
} {
SEARCH TABLE t1 USING INTEGER PRIMARY KEY
} {
1 one 3 three 5 five
}
do_execsql_eqp_test 1.7 {
SELECT t1.* FROM t1 WHERE EXISTS(
SELECT * FROM t2 WHERE d IN (1, 2, 3)AND t1.a=t2.c
);
} {
SEARCH TABLE t1 USING INTEGER PRIMARY KEY
} {
1 one 3 three 5 five
}
#-------------------------------------------------------------------------
#
reset_db
do_execsql_test 2.0 {
CREATE TABLE t3(a TEXT PRIMARY KEY, b TEXT) WITHOUT ROWID;
CREATE TABLE t4(c TEXT COLLATE nocase);
INSERT INTO t3 VALUES('one', 'i');
INSERT INTO t3 VALUES('two', 'ii');
INSERT INTO t3 VALUES('three', 'iii');
INSERT INTO t3 VALUES('four', 'iv');
INSERT INTO t3 VALUES('five', 'v');
INSERT INTO t4 VALUES('FIVE'), ('four'), ('TWO'), ('one');
}
do_execsql_test 2.1 { SELECT a FROM t3, t4 WHERE a=c } {four one}
do_execsql_test 2.2 { SELECT a FROM t3, t4 WHERE c=a } {five four one two}
do_execsql_eqp_test 2.3 {
SELECT a FROM t3 WHERE EXISTS (SELECT 1 FROM t4 WHERE a=c)
} {
SEARCH TABLE t3 USING PRIMARY KEY
} {
four one
}
do_execsql_eqp_test 2.4 {
SELECT a FROM t3 WHERE EXISTS (SELECT 1 FROM t4 WHERE c=a)
} {
SCAN TABLE t3
} {
five four one two
}
do_execsql_test 2.5 {
CREATE INDEX t3anc ON t3(a COLLATE nocase);
}
do_execsql_eqp_test 2.6 {
SELECT a FROM t3 WHERE EXISTS (SELECT 1 FROM t4 WHERE c=a)
} {
SEARCH TABLE t3 USING COVERING INDEX t3anc
} {
five four one two
}
do_execsql_eqp_test 2.7 {
SELECT a FROM t3 WHERE EXISTS (SELECT 1 FROM t4 WHERE a=c)
} {
SEARCH TABLE t3 USING PRIMARY KEY
} {
four one
}
finish_test