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sqlite/test/selectB.test
drh 4b3ac73c2f Minor cleanups of the compound-subquery flattening logic. New test cases 
added for joins the compound subquery.

FossilOrigin-Name: 5061d85ff934db3c217c97acbbbed3286d9e02aa
2011-12-10 23:18:32 +00:00

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# 2008 June 24
#
# 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 implements regression tests for SQLite library.
#
# $Id: selectB.test,v 1.10 2009/04/02 16:59:47 drh Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
ifcapable !compound {
finish_test
return
}
proc test_transform {testname sql1 sql2 results} {
set ::vdbe1 [list]
set ::vdbe2 [list]
db eval "explain $sql1" { lappend ::vdbe1 $opcode }
db eval "explain $sql2" { lappend ::vdbe2 $opcode }
do_test $testname.transform {
set ::vdbe1
} $::vdbe2
set ::sql1 $sql1
do_test $testname.sql1 {
execsql $::sql1
} $results
set ::sql2 $sql2
do_test $testname.sql2 {
execsql $::sql2
} $results
}
do_test selectB-1.1 {
execsql {
CREATE TABLE t1(a, b, c);
CREATE TABLE t2(d, e, f);
INSERT INTO t1 VALUES( 2, 4, 6);
INSERT INTO t1 VALUES( 8, 10, 12);
INSERT INTO t1 VALUES(14, 16, 18);
INSERT INTO t2 VALUES(3, 6, 9);
INSERT INTO t2 VALUES(12, 15, 18);
INSERT INTO t2 VALUES(21, 24, 27);
}
} {}
for {set ii 1} {$ii <= 2} {incr ii} {
if {$ii == 2} {
do_test selectB-2.1 {
execsql {
CREATE INDEX i1 ON t1(a);
CREATE INDEX i2 ON t2(d);
}
} {}
}
test_transform selectB-$ii.2 {
SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT d FROM t2)
} {
SELECT a FROM t1 UNION ALL SELECT d FROM t2
} {2 8 14 3 12 21}
test_transform selectB-$ii.3 {
SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT d FROM t2) ORDER BY 1
} {
SELECT a FROM t1 UNION ALL SELECT d FROM t2 ORDER BY 1
} {2 3 8 12 14 21}
test_transform selectB-$ii.4 {
SELECT * FROM
(SELECT a FROM t1 UNION ALL SELECT d FROM t2)
WHERE a>10 ORDER BY 1
} {
SELECT a FROM t1 WHERE a>10 UNION ALL SELECT d FROM t2 WHERE d>10 ORDER BY 1
} {12 14 21}
test_transform selectB-$ii.5 {
SELECT * FROM
(SELECT a FROM t1 UNION ALL SELECT d FROM t2)
WHERE a>10 ORDER BY a
} {
SELECT a FROM t1 WHERE a>10
UNION ALL
SELECT d FROM t2 WHERE d>10
ORDER BY a
} {12 14 21}
test_transform selectB-$ii.6 {
SELECT * FROM
(SELECT a FROM t1 UNION ALL SELECT d FROM t2 WHERE d > 12)
WHERE a>10 ORDER BY a
} {
SELECT a FROM t1 WHERE a>10
UNION ALL
SELECT d FROM t2 WHERE d>12 AND d>10
ORDER BY a
} {14 21}
test_transform selectB-$ii.7 {
SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT d FROM t2) ORDER BY 1
LIMIT 2
} {
SELECT a FROM t1 UNION ALL SELECT d FROM t2 ORDER BY 1 LIMIT 2
} {2 3}
test_transform selectB-$ii.8 {
SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT d FROM t2) ORDER BY 1
LIMIT 2 OFFSET 3
} {
SELECT a FROM t1 UNION ALL SELECT d FROM t2 ORDER BY 1 LIMIT 2 OFFSET 3
} {12 14}
test_transform selectB-$ii.9 {
SELECT * FROM (
SELECT a FROM t1 UNION ALL SELECT d FROM t2 UNION ALL SELECT c FROM t1
)
} {
SELECT a FROM t1 UNION ALL SELECT d FROM t2 UNION ALL SELECT c FROM t1
} {2 8 14 3 12 21 6 12 18}
test_transform selectB-$ii.10 {
SELECT * FROM (
SELECT a FROM t1 UNION ALL SELECT d FROM t2 UNION ALL SELECT c FROM t1
) ORDER BY 1
} {
SELECT a FROM t1 UNION ALL SELECT d FROM t2 UNION ALL SELECT c FROM t1
ORDER BY 1
} {2 3 6 8 12 12 14 18 21}
test_transform selectB-$ii.11 {
SELECT * FROM (
SELECT a FROM t1 UNION ALL SELECT d FROM t2 UNION ALL SELECT c FROM t1
) WHERE a>=10 ORDER BY 1 LIMIT 3
} {
SELECT a FROM t1 WHERE a>=10 UNION ALL SELECT d FROM t2 WHERE d>=10
UNION ALL SELECT c FROM t1 WHERE c>=10
ORDER BY 1 LIMIT 3
} {12 12 14}
test_transform selectB-$ii.12 {
SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT d FROM t2 LIMIT 2)
} {
SELECT a FROM t1 UNION ALL SELECT d FROM t2 LIMIT 2
} {2 8}
# An ORDER BY in a compound subqueries defeats flattening. Ticket #3773
# test_transform selectB-$ii.13 {
# SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT d FROM t2 ORDER BY a ASC)
# } {
# SELECT a FROM t1 UNION ALL SELECT d FROM t2 ORDER BY 1 ASC
# } {2 3 8 12 14 21}
#
# test_transform selectB-$ii.14 {
# SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT d FROM t2 ORDER BY a DESC)
# } {
# SELECT a FROM t1 UNION ALL SELECT d FROM t2 ORDER BY 1 DESC
# } {21 14 12 8 3 2}
#
# test_transform selectB-$ii.14 {
# SELECT * FROM (
# SELECT a FROM t1 UNION ALL SELECT d FROM t2 ORDER BY a DESC
# ) LIMIT 2 OFFSET 2
# } {
# SELECT a FROM t1 UNION ALL SELECT d FROM t2 ORDER BY 1 DESC
# LIMIT 2 OFFSET 2
# } {12 8}
#
# test_transform selectB-$ii.15 {
# SELECT * FROM (
# SELECT a, b FROM t1 UNION ALL SELECT d, e FROM t2 ORDER BY a ASC, e DESC
# )
# } {
# SELECT a, b FROM t1 UNION ALL SELECT d, e FROM t2 ORDER BY a ASC, e DESC
# } {2 4 3 6 8 10 12 15 14 16 21 24}
}
do_test selectB-3.0 {
execsql {
DROP INDEX i1;
DROP INDEX i2;
}
} {}
for {set ii 3} {$ii <= 6} {incr ii} {
switch $ii {
4 {
optimization_control db query-flattener off
}
5 {
optimization_control db query-flattener on
do_test selectB-5.0 {
execsql {
CREATE INDEX i1 ON t1(a);
CREATE INDEX i2 ON t1(b);
CREATE INDEX i3 ON t1(c);
CREATE INDEX i4 ON t2(d);
CREATE INDEX i5 ON t2(e);
CREATE INDEX i6 ON t2(f);
}
} {}
}
6 {
optimization_control db query-flattener off
}
}
do_test selectB-$ii.1 {
execsql {
SELECT DISTINCT * FROM
(SELECT c FROM t1 UNION ALL SELECT e FROM t2)
ORDER BY 1;
}
} {6 12 15 18 24}
do_test selectB-$ii.2 {
execsql {
SELECT c, count(*) FROM
(SELECT c FROM t1 UNION ALL SELECT e FROM t2)
GROUP BY c ORDER BY 1;
}
} {6 2 12 1 15 1 18 1 24 1}
do_test selectB-$ii.3 {
execsql {
SELECT c, count(*) FROM
(SELECT c FROM t1 UNION ALL SELECT e FROM t2)
GROUP BY c HAVING count(*)>1;
}
} {6 2}
do_test selectB-$ii.4 {
execsql {
SELECT t4.c, t3.a FROM
(SELECT c FROM t1 UNION ALL SELECT e FROM t2) AS t4, t1 AS t3
WHERE t3.a=14
ORDER BY 1
}
} {6 14 6 14 12 14 15 14 18 14 24 14}
do_test selectB-$ii.5 {
execsql {
SELECT d FROM t2
EXCEPT
SELECT a FROM (SELECT a FROM t1 UNION ALL SELECT d FROM t2)
}
} {}
do_test selectB-$ii.6 {
execsql {
SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT d FROM t2)
EXCEPT
SELECT * FROM (SELECT a FROM t1 UNION ALL SELECT d FROM t2)
}
} {}
do_test selectB-$ii.7 {
execsql {
SELECT c FROM t1
EXCEPT
SELECT * FROM (SELECT e FROM t2 UNION ALL SELECT f FROM t2)
}
} {12}
do_test selectB-$ii.8 {
execsql {
SELECT * FROM (SELECT e FROM t2 UNION ALL SELECT f FROM t2)
EXCEPT
SELECT c FROM t1
}
} {9 15 24 27}
do_test selectB-$ii.9 {
execsql {
SELECT * FROM (SELECT e FROM t2 UNION ALL SELECT f FROM t2)
EXCEPT
SELECT c FROM t1
ORDER BY c DESC
}
} {27 24 15 9}
do_test selectB-$ii.10 {
execsql {
SELECT * FROM (SELECT e FROM t2 UNION ALL SELECT f FROM t2)
UNION
SELECT c FROM t1
ORDER BY c DESC
}
} {27 24 18 15 12 9 6}
do_test selectB-$ii.11 {
execsql {
SELECT c FROM t1
UNION
SELECT * FROM (SELECT e FROM t2 UNION ALL SELECT f FROM t2)
ORDER BY c
}
} {6 9 12 15 18 24 27}
do_test selectB-$ii.12 {
execsql {
SELECT c FROM t1 UNION SELECT e FROM t2 UNION ALL SELECT f FROM t2
ORDER BY c
}
} {6 9 12 15 18 18 24 27}
do_test selectB-$ii.13 {
execsql {
SELECT * FROM (SELECT e FROM t2 UNION ALL SELECT f FROM t2)
UNION
SELECT * FROM (SELECT e FROM t2 UNION ALL SELECT f FROM t2)
ORDER BY 1
}
} {6 9 15 18 24 27}
do_test selectB-$ii.14 {
execsql {
SELECT c FROM t1
INTERSECT
SELECT * FROM (SELECT e FROM t2 UNION ALL SELECT f FROM t2)
ORDER BY 1
}
} {6 18}
do_test selectB-$ii.15 {
execsql {
SELECT * FROM (SELECT e FROM t2 UNION ALL SELECT f FROM t2)
INTERSECT
SELECT c FROM t1
ORDER BY 1
}
} {6 18}
do_test selectB-$ii.16 {
execsql {
SELECT * FROM (SELECT e FROM t2 UNION ALL SELECT f FROM t2)
INTERSECT
SELECT * FROM (SELECT e FROM t2 UNION ALL SELECT f FROM t2)
ORDER BY 1
}
} {6 9 15 18 24 27}
do_test selectB-$ii.17 {
execsql {
SELECT * FROM (
SELECT a FROM t1 UNION ALL SELECT d FROM t2 LIMIT 4
) LIMIT 2
}
} {2 8}
do_test selectB-$ii.18 {
execsql {
SELECT * FROM (
SELECT a FROM t1 UNION ALL SELECT d FROM t2 LIMIT 4 OFFSET 2
) LIMIT 2
}
} {14 3}
do_test selectB-$ii.19 {
execsql {
SELECT * FROM (
SELECT DISTINCT (a/10) FROM t1 UNION ALL SELECT DISTINCT(d%2) FROM t2
)
}
} {0 1 1 0}
do_test selectB-$ii.20 {
execsql {
SELECT DISTINCT * FROM (
SELECT DISTINCT (a/10) FROM t1 UNION ALL SELECT DISTINCT(d%2) FROM t2
)
}
} {0 1}
do_test selectB-$ii.21 {
execsql {
SELECT * FROM (SELECT * FROM t1 UNION ALL SELECT * FROM t2) ORDER BY a+b
}
} {2 4 6 3 6 9 8 10 12 12 15 18 14 16 18 21 24 27}
do_test selectB-$ii.22 {
execsql {
SELECT * FROM (SELECT 345 UNION ALL SELECT d FROM t2) ORDER BY 1;
}
} {3 12 21 345}
do_test selectB-$ii.23 {
execsql {
SELECT x, y FROM (
SELECT a AS x, b AS y FROM t1
UNION ALL
SELECT a*10 + 0.1, f*10 + 0.1 FROM t1 JOIN t2 ON (c=d)
UNION ALL
SELECT a*100, b*100 FROM t1
) ORDER BY 1;
}
} {2 4 8 10 14 16 80.1 180.1 200 400 800 1000 1400 1600}
do_test selectB-$ii.24 {
execsql {
SELECT x, y FROM (
SELECT a AS x, b AS y FROM t1
UNION ALL
SELECT a*10 + 0.1, f*10 + 0.1 FROM t1 LEFT JOIN t2 ON (c=d)
UNION ALL
SELECT a*100, b*100 FROM t1
) ORDER BY 1;
}
} {2 4 8 10 14 16 20.1 {} 80.1 180.1 140.1 {} 200 400 800 1000 1400 1600}
do_test selectB-$ii.25 {
execsql {
SELECT x+y FROM (
SELECT a AS x, b AS y FROM t1
UNION ALL
SELECT a*10 + 0.1, f*10 + 0.1 FROM t1 LEFT JOIN t2 ON (c=d)
UNION ALL
SELECT a*100, b*100 FROM t1
) WHERE y+x NOT NULL ORDER BY 1;
}
} {6 18 30 260.2 600 1800 3000}
}
finish_test
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