# 2012 September 18
#
# 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.
#
#***********************************************************************
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix in5
do_test in5-1.1 {
execsql {
CREATE TABLE t1x(x INTEGER PRIMARY KEY);
INSERT INTO t1x VALUES(1),(3),(5),(7),(9);
CREATE TABLE t1y(y INTEGER UNIQUE);
INSERT INTO t1y VALUES(2),(4),(6),(8);
CREATE TABLE t1z(z TEXT UNIQUE);
INSERT INTO t1z VALUES('a'),('c'),('e'),('g');
CREATE TABLE t2(a INTEGER, b INTEGER, c TEXT, d TEXT);
INSERT INTO t2 VALUES(1,2,'a','12a'),(1,2,'b','12b'),
(2,3,'g','23g'),(3,5,'c','35c'),
(4,6,'h','46h'),(5,6,'e','56e');
CREATE TABLE t3x AS SELECT x FROM t1x;
CREATE TABLE t3y AS SELECT y FROM t1y;
CREATE TABLE t3z AS SELECT z FROM t1z;
SELECT d FROM t2 WHERE a IN t1x AND b IN t1y AND c IN t1z ORDER BY c;
}
} {12a 56e}
do_test in5-1.2 {
execsql {
SELECT d FROM t2 WHERE a IN t1y AND b IN t1x AND c IN t1z ORDER BY d;
}
} {23g}
do_test in5-1.3 {
execsql {
SELECT d FROM t2 WHERE a IN t3x AND b IN t3y AND c IN t3z ORDER BY d;
}
} {12a 56e}
do_test in5-2.1 {
execsql {
CREATE INDEX t2abc ON t2(a,b,c);
SELECT d FROM t2 WHERE a IN t1x AND b IN t1y AND c IN t1z ORDER BY d;
}
} {12a 56e}
do_test in5-2.2 {
execsql {
SELECT d FROM t2 WHERE a IN t1y AND b IN t1x AND c IN t1z ORDER BY d;
}
} {23g}
do_test in5-2.3 {
regexp {OpenEphemeral} [db eval {
EXPLAIN SELECT d FROM t2 WHERE a IN t1x AND b IN t1y AND c IN t1z
}]
} {0}
do_test in5-2.4 {
execsql {
SELECT d FROM t2 WHERE a IN t3x AND b IN t3y AND c IN t3z ORDER BY d;
}
} {12a 56e}
do_test in5-2.5.1 {
regexp {OpenEphemeral} [db eval {
EXPLAIN SELECT d FROM t2 WHERE a IN t3x AND b IN t1y AND c IN t1z
}]
} {1}
do_test in5-2.5.2 {
regexp {OpenEphemeral} [db eval {
EXPLAIN SELECT d FROM t2 WHERE a IN t1x AND b IN t3y AND c IN t1z
}]
} {1}
do_test in5-2.5.3 {
regexp {OpenEphemeral} [db eval {
EXPLAIN SELECT d FROM t2 WHERE a IN t1x AND b IN t1y AND c IN t3z
}]
} {1}
do_test in5-3.1 {
execsql {
DROP INDEX t2abc;
CREATE INDEX t2ab ON t2(a,b);
SELECT d FROM t2 WHERE a IN t1x AND b IN t1y AND c IN t1z ORDER BY d;
}
} {12a 56e}
do_test in5-3.2 {
execsql {
SELECT d FROM t2 WHERE a IN t1y AND b IN t1x AND c IN t1z ORDER BY d;
}
} {23g}
do_test in5-3.3 {
regexp {OpenEphemeral} [db eval {
EXPLAIN SELECT d FROM t2 WHERE a IN t1x AND b IN t1y AND c IN t1z
}]
} {0}
do_test in5-4.1 {
execsql {
DROP INDEX t2ab;
CREATE INDEX t2abcd ON t2(a,b,c,d);
SELECT d FROM t2 WHERE a IN t1x AND b IN t1y AND c IN t1z ORDER BY d;
}
} {12a 56e}
do_test in5-4.2 {
execsql {
SELECT d FROM t2 WHERE a IN t1y AND b IN t1x AND c IN t1z ORDER BY d;
}
} {23g}
do_test in5-4.3 {
regexp {OpenEphemeral} [db eval {
EXPLAIN SELECT d FROM t2 WHERE a IN t1x AND b IN t1y AND c IN t1z
}]
} {0}
do_test in5-5.1 {
execsql {
DROP INDEX t2abcd;
CREATE INDEX t2cbad ON t2(c,b,a,d);
SELECT d FROM t2 WHERE a IN t1x AND b IN t1y AND c IN t1z ORDER BY d;
}
} {12a 56e}
do_test in5-5.2 {
execsql {
SELECT d FROM t2 WHERE a IN t1y AND b IN t1x AND c IN t1z ORDER BY d;
}
} {23g}
do_test in5-5.3 {
regexp {OpenEphemeral} [db eval {
EXPLAIN SELECT d FROM t2 WHERE a IN t1x AND b IN t1y AND c IN t1z
}]
} {0}
#-------------------------------------------------------------------------
# At one point SQLite was removing the DISTINCT keyword from expressions
# similar to:
#
# <expr1> IN (SELECT DISTINCT <expr2> FROM...)
#
# However, there are a few obscure cases where this is incorrect. For
# example, if the SELECT features a LIMIT clause, or if the collation
# sequence or affinity used by the DISTINCT does not match the one used
# by the IN(...) expression.
#
do_execsql_test 6.1.1 {
CREATE TABLE t1(a COLLATE nocase);
INSERT INTO t1 VALUES('one');
INSERT INTO t1 VALUES('ONE');
}
do_execsql_test 6.1.2 {
SELECT count(*) FROM t1 WHERE a COLLATE BINARY IN (SELECT DISTINCT a FROM t1)
} {1}
do_execsql_test 6.2.1 {
CREATE TABLE t3(a, b);
INSERT INTO t3 VALUES(1, 1);
INSERT INTO t3 VALUES(1, 2);
INSERT INTO t3 VALUES(1, 3);
INSERT INTO t3 VALUES(2, 4);
INSERT INTO t3 VALUES(2, 5);
INSERT INTO t3 VALUES(2, 6);
INSERT INTO t3 VALUES(3, 7);
INSERT INTO t3 VALUES(3, 8);
INSERT INTO t3 VALUES(3, 9);
}
do_execsql_test 6.2.2 {
SELECT count(*) FROM t3 WHERE b IN (SELECT DISTINCT a FROM t3 LIMIT 5);
} {3}
do_execsql_test 6.2.3 {
SELECT count(*) FROM t3 WHERE b IN (SELECT a FROM t3 LIMIT 5);
} {2}
do_execsql_test 6.3.1 {
CREATE TABLE x1(a);
CREATE TABLE x2(b);
INSERT INTO x1 VALUES(1), (1), (2);
INSERT INTO x2 VALUES(1), (2);
SELECT count(*) FROM x2 WHERE b IN (SELECT DISTINCT a FROM x1 LIMIT 2);
} {2}
finish_test