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Diffstat (limited to 'test/select6.test')
| -rw-r--r-- | test/select6.test | 517 |
1 files changed, 517 insertions, 0 deletions
diff --git a/test/select6.test b/test/select6.test new file mode 100644 index 0000000..e0ff165 --- /dev/null +++ b/test/select6.test @@ -0,0 +1,517 @@ +# 2001 September 15 +# +# 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. The +# focus of this file is testing SELECT statements that contain +# subqueries in their FROM clause. +# +# $Id: select6.test,v 1.29 2009/01/09 01:12:28 drh Exp $ + +set testdir [file dirname $argv0] +source $testdir/tester.tcl + +# Omit this whole file if the library is build without subquery support. +ifcapable !subquery { + finish_test + return +} + +do_test select6-1.0 { + execsql { + BEGIN; + CREATE TABLE t1(x, y); + INSERT INTO t1 VALUES(1,1); + INSERT INTO t1 VALUES(2,2); + INSERT INTO t1 VALUES(3,2); + INSERT INTO t1 VALUES(4,3); + INSERT INTO t1 VALUES(5,3); + INSERT INTO t1 VALUES(6,3); + INSERT INTO t1 VALUES(7,3); + INSERT INTO t1 VALUES(8,4); + INSERT INTO t1 VALUES(9,4); + INSERT INTO t1 VALUES(10,4); + INSERT INTO t1 VALUES(11,4); + INSERT INTO t1 VALUES(12,4); + INSERT INTO t1 VALUES(13,4); + INSERT INTO t1 VALUES(14,4); + INSERT INTO t1 VALUES(15,4); + INSERT INTO t1 VALUES(16,5); + INSERT INTO t1 VALUES(17,5); + INSERT INTO t1 VALUES(18,5); + INSERT INTO t1 VALUES(19,5); + INSERT INTO t1 VALUES(20,5); + COMMIT; + SELECT DISTINCT y FROM t1 ORDER BY y; + } +} {1 2 3 4 5} + +do_test select6-1.1 { + execsql2 {SELECT * FROM (SELECT x, y FROM t1 WHERE x<2)} +} {x 1 y 1} +do_test select6-1.2 { + execsql {SELECT count(*) FROM (SELECT y FROM t1)} +} {20} +do_test select6-1.3 { + execsql {SELECT count(*) FROM (SELECT DISTINCT y FROM t1)} +} {5} +do_test select6-1.4 { + execsql {SELECT count(*) FROM (SELECT DISTINCT * FROM (SELECT y FROM t1))} +} {5} +do_test select6-1.5 { + execsql {SELECT count(*) FROM (SELECT * FROM (SELECT DISTINCT y FROM t1))} +} {5} + +do_test select6-1.6 { + execsql { + SELECT * + FROM (SELECT count(*),y FROM t1 GROUP BY y) AS a, + (SELECT max(x),y FROM t1 GROUP BY y) as b + WHERE a.y=b.y ORDER BY a.y + } +} {1 1 1 1 2 2 3 2 4 3 7 3 8 4 15 4 5 5 20 5} +do_test select6-1.7 { + execsql { + SELECT a.y, a.[count(*)], [max(x)], [count(*)] + FROM (SELECT count(*),y FROM t1 GROUP BY y) AS a, + (SELECT max(x),y FROM t1 GROUP BY y) as b + WHERE a.y=b.y ORDER BY a.y + } +} {1 1 1 1 2 2 3 2 3 4 7 4 4 8 15 8 5 5 20 5} +do_test select6-1.8 { + execsql { + SELECT q, p, r + FROM (SELECT count(*) as p , y as q FROM t1 GROUP BY y) AS a, + (SELECT max(x) as r, y as s FROM t1 GROUP BY y) as b + WHERE q=s ORDER BY s + } +} {1 1 1 2 2 3 3 4 7 4 8 15 5 5 20} +do_test select6-1.9 { + execsql { + SELECT q, p, r, b.[min(x)+y] + FROM (SELECT count(*) as p , y as q FROM t1 GROUP BY y) AS a, + (SELECT max(x) as r, y as s, min(x)+y FROM t1 GROUP BY y) as b + WHERE q=s ORDER BY s + } +} {1 1 1 2 2 2 3 4 3 4 7 7 4 8 15 12 5 5 20 21} + +do_test select6-2.0 { + execsql { + CREATE TABLE t2(a INTEGER PRIMARY KEY, b); + INSERT INTO t2 SELECT * FROM t1; + SELECT DISTINCT b FROM t2 ORDER BY b; + } +} {1 2 3 4 5} +do_test select6-2.1 { + execsql2 {SELECT * FROM (SELECT a, b FROM t2 WHERE a<2)} +} {a 1 b 1} +do_test select6-2.2 { + execsql {SELECT count(*) FROM (SELECT b FROM t2)} +} {20} +do_test select6-2.3 { + execsql {SELECT count(*) FROM (SELECT DISTINCT b FROM t2)} +} {5} +do_test select6-2.4 { + execsql {SELECT count(*) FROM (SELECT DISTINCT * FROM (SELECT b FROM t2))} +} {5} +do_test select6-2.5 { + execsql {SELECT count(*) FROM (SELECT * FROM (SELECT DISTINCT b FROM t2))} +} {5} + +do_test select6-2.6 { + execsql { + SELECT * + FROM (SELECT count(*),b FROM t2 GROUP BY b) AS a, + (SELECT max(a),b FROM t2 GROUP BY b) as b + WHERE a.b=b.b ORDER BY a.b + } +} {1 1 1 1 2 2 3 2 4 3 7 3 8 4 15 4 5 5 20 5} +do_test select6-2.7 { + execsql { + SELECT a.b, a.[count(*)], [max(a)], [count(*)] + FROM (SELECT count(*),b FROM t2 GROUP BY b) AS a, + (SELECT max(a),b FROM t2 GROUP BY b) as b + WHERE a.b=b.b ORDER BY a.b + } +} {1 1 1 1 2 2 3 2 3 4 7 4 4 8 15 8 5 5 20 5} +do_test select6-2.8 { + execsql { + SELECT q, p, r + FROM (SELECT count(*) as p , b as q FROM t2 GROUP BY b) AS a, + (SELECT max(a) as r, b as s FROM t2 GROUP BY b) as b + WHERE q=s ORDER BY s + } +} {1 1 1 2 2 3 3 4 7 4 8 15 5 5 20} +do_test select6-2.9 { + execsql { + SELECT a.q, a.p, b.r + FROM (SELECT count(*) as p , b as q FROM t2 GROUP BY q) AS a, + (SELECT max(a) as r, b as s FROM t2 GROUP BY s) as b + WHERE a.q=b.s ORDER BY a.q + } +} {1 1 1 2 2 3 3 4 7 4 8 15 5 5 20} + +do_test select6-3.1 { + execsql2 { + SELECT * FROM (SELECT * FROM (SELECT * FROM t1 WHERE x=3)); + } +} {x 3 y 2} +do_test select6-3.2 { + execsql { + SELECT * FROM + (SELECT a.q, a.p, b.r + FROM (SELECT count(*) as p , b as q FROM t2 GROUP BY q) AS a, + (SELECT max(a) as r, b as s FROM t2 GROUP BY s) as b + WHERE a.q=b.s ORDER BY a.q) + ORDER BY "a.q" + } +} {1 1 1 2 2 3 3 4 7 4 8 15 5 5 20} +do_test select6-3.3 { + execsql { + SELECT a,b,a+b FROM (SELECT avg(x) as 'a', avg(y) as 'b' FROM t1) + } +} {10.5 3.7 14.2} +do_test select6-3.4 { + execsql { + SELECT a,b,a+b FROM (SELECT avg(x) as 'a', avg(y) as 'b' FROM t1 WHERE y=4) + } +} {11.5 4.0 15.5} +do_test select6-3.5 { + execsql { + SELECT x,y,x+y FROM (SELECT avg(a) as 'x', avg(b) as 'y' FROM t2 WHERE a=4) + } +} {4.0 3.0 7.0} +do_test select6-3.6 { + execsql { + SELECT a,b,a+b FROM (SELECT avg(x) as 'a', avg(y) as 'b' FROM t1) + WHERE a>10 + } +} {10.5 3.7 14.2} +do_test select6-3.7 { + execsql { + SELECT a,b,a+b FROM (SELECT avg(x) as 'a', avg(y) as 'b' FROM t1) + WHERE a<10 + } +} {} +do_test select6-3.8 { + execsql { + SELECT a,b,a+b FROM (SELECT avg(x) as 'a', avg(y) as 'b' FROM t1 WHERE y=4) + WHERE a>10 + } +} {11.5 4.0 15.5} +do_test select6-3.9 { + execsql { + SELECT a,b,a+b FROM (SELECT avg(x) as 'a', avg(y) as 'b' FROM t1 WHERE y=4) + WHERE a<10 + } +} {} +do_test select6-3.10 { + execsql { + SELECT a,b,a+b FROM (SELECT avg(x) as 'a', y as 'b' FROM t1 GROUP BY b) + ORDER BY a + } +} {1.0 1 2.0 2.5 2 4.5 5.5 3 8.5 11.5 4 15.5 18.0 5 23.0} +do_test select6-3.11 { + execsql { + SELECT a,b,a+b FROM + (SELECT avg(x) as 'a', y as 'b' FROM t1 GROUP BY b) + WHERE b<4 ORDER BY a + } +} {1.0 1 2.0 2.5 2 4.5 5.5 3 8.5} +do_test select6-3.12 { + execsql { + SELECT a,b,a+b FROM + (SELECT avg(x) as 'a', y as 'b' FROM t1 GROUP BY b HAVING a>1) + WHERE b<4 ORDER BY a + } +} {2.5 2 4.5 5.5 3 8.5} +do_test select6-3.13 { + execsql { + SELECT a,b,a+b FROM + (SELECT avg(x) as 'a', y as 'b' FROM t1 GROUP BY b HAVING a>1) + ORDER BY a + } +} {2.5 2 4.5 5.5 3 8.5 11.5 4 15.5 18.0 5 23.0} +do_test select6-3.14 { + execsql { + SELECT [count(*)],y FROM (SELECT count(*), y FROM t1 GROUP BY y) + ORDER BY [count(*)] + } +} {1 1 2 2 4 3 5 5 8 4} +do_test select6-3.15 { + execsql { + SELECT [count(*)],y FROM (SELECT count(*), y FROM t1 GROUP BY y) + ORDER BY y + } +} {1 1 2 2 4 3 8 4 5 5} + +do_test select6-4.1 { + execsql { + SELECT a,b,c FROM + (SELECT x AS 'a', y AS 'b', x+y AS 'c' FROM t1 WHERE y=4) + WHERE a<10 ORDER BY a; + } +} {8 4 12 9 4 13} +do_test select6-4.2 { + execsql { + SELECT y FROM (SELECT DISTINCT y FROM t1) WHERE y<5 ORDER BY y + } +} {1 2 3 4} +do_test select6-4.3 { + execsql { + SELECT DISTINCT y FROM (SELECT y FROM t1) WHERE y<5 ORDER BY y + } +} {1 2 3 4} +do_test select6-4.4 { + execsql { + SELECT avg(y) FROM (SELECT DISTINCT y FROM t1) WHERE y<5 ORDER BY y + } +} {2.5} +do_test select6-4.5 { + execsql { + SELECT avg(y) FROM (SELECT DISTINCT y FROM t1 WHERE y<5) ORDER BY y + } +} {2.5} + +do_test select6-5.1 { + execsql { + SELECT a,x,b FROM + (SELECT x+3 AS 'a', x FROM t1 WHERE y=3) AS 'p', + (SELECT x AS 'b' FROM t1 WHERE y=4) AS 'q' + WHERE a=b + ORDER BY a + } +} {8 5 8 9 6 9 10 7 10} +do_test select6-5.2 { + execsql { + SELECT a,x,b FROM + (SELECT x+3 AS 'a', x FROM t1 WHERE y=3), + (SELECT x AS 'b' FROM t1 WHERE y=4) + WHERE a=b + ORDER BY a + } +} {8 5 8 9 6 9 10 7 10} + +# Tests of compound sub-selects +# +do_test select6-6.1 { + execsql { + DELETE FROM t1 WHERE x>4; + SELECT * FROM t1 + } +} {1 1 2 2 3 2 4 3} +ifcapable compound { + do_test select6-6.2 { + execsql { + SELECT * FROM ( + SELECT x AS 'a' FROM t1 UNION ALL SELECT x+10 AS 'a' FROM t1 + ) ORDER BY a; + } + } {1 2 3 4 11 12 13 14} + do_test select6-6.3 { + execsql { + SELECT * FROM ( + SELECT x AS 'a' FROM t1 UNION ALL SELECT x+1 AS 'a' FROM t1 + ) ORDER BY a; + } + } {1 2 2 3 3 4 4 5} + do_test select6-6.4 { + execsql { + SELECT * FROM ( + SELECT x AS 'a' FROM t1 UNION SELECT x+1 AS 'a' FROM t1 + ) ORDER BY a; + } + } {1 2 3 4 5} + do_test select6-6.5 { + execsql { + SELECT * FROM ( + SELECT x AS 'a' FROM t1 INTERSECT SELECT x+1 AS 'a' FROM t1 + ) ORDER BY a; + } + } {2 3 4} + do_test select6-6.6 { + execsql { + SELECT * FROM ( + SELECT x AS 'a' FROM t1 EXCEPT SELECT x*2 AS 'a' FROM t1 + ) ORDER BY a; + } + } {1 3} +} ;# ifcapable compound + +# Subselects with no FROM clause +# +do_test select6-7.1 { + execsql { + SELECT * FROM (SELECT 1) + } +} {1} +do_test select6-7.2 { + execsql { + SELECT c,b,a,* FROM (SELECT 1 AS 'a', 2 AS 'b', 'abc' AS 'c') + } +} {abc 2 1 1 2 abc} +do_test select6-7.3 { + execsql { + SELECT c,b,a,* FROM (SELECT 1 AS 'a', 2 AS 'b', 'abc' AS 'c' WHERE 0) + } +} {} +do_test select6-7.4 { + execsql2 { + SELECT c,b,a,* FROM (SELECT 1 AS 'a', 2 AS 'b', 'abc' AS 'c' WHERE 1) + } +} {c abc b 2 a 1 a 1 b 2 c abc} + +# The remaining tests in this file depend on the EXPLAIN keyword. +# Skip these tests if EXPLAIN is disabled in the current build. +# +ifcapable {!explain} { + finish_test + return +} + +# The following procedure compiles the SQL given as an argument and returns +# TRUE if that SQL uses any transient tables and returns FALSE if no +# transient tables are used. This is used to make sure that the +# sqliteFlattenSubquery() routine in select.c is doing its job. +# +proc is_flat {sql} { + return [expr 0>[lsearch [execsql "EXPLAIN $sql"] OpenEphemeral]] +} + +# Check that the flattener works correctly for deeply nested subqueries +# involving joins. +# +do_test select6-8.1 { + execsql { + BEGIN; + CREATE TABLE t3(p,q); + INSERT INTO t3 VALUES(1,11); + INSERT INTO t3 VALUES(2,22); + CREATE TABLE t4(q,r); + INSERT INTO t4 VALUES(11,111); + INSERT INTO t4 VALUES(22,222); + COMMIT; + SELECT * FROM t3 NATURAL JOIN t4; + } +} {1 11 111 2 22 222} +do_test select6-8.2 { + execsql { + SELECT y, p, q, r FROM + (SELECT t1.y AS y, t2.b AS b FROM t1, t2 WHERE t1.x=t2.a) AS m, + (SELECT t3.p AS p, t3.q AS q, t4.r AS r FROM t3 NATURAL JOIN t4) as n + WHERE y=p + } +} {1 1 11 111 2 2 22 222 2 2 22 222} +# If view support is omitted from the build, then so is the query +# "flattener". So omit this test and test select6-8.6 in that case. +ifcapable view { +do_test select6-8.3 { + is_flat { + SELECT y, p, q, r FROM + (SELECT t1.y AS y, t2.b AS b FROM t1, t2 WHERE t1.x=t2.a) AS m, + (SELECT t3.p AS p, t3.q AS q, t4.r AS r FROM t3 NATURAL JOIN t4) as n + WHERE y=p + } +} {1} +} ;# ifcapable view +do_test select6-8.4 { + execsql { + SELECT DISTINCT y, p, q, r FROM + (SELECT t1.y AS y, t2.b AS b FROM t1, t2 WHERE t1.x=t2.a) AS m, + (SELECT t3.p AS p, t3.q AS q, t4.r AS r FROM t3 NATURAL JOIN t4) as n + WHERE y=p + } +} {1 1 11 111 2 2 22 222} +do_test select6-8.5 { + execsql { + SELECT * FROM + (SELECT y, p, q, r FROM + (SELECT t1.y AS y, t2.b AS b FROM t1, t2 WHERE t1.x=t2.a) AS m, + (SELECT t3.p AS p, t3.q AS q, t4.r AS r FROM t3 NATURAL JOIN t4) as n + WHERE y=p) AS e, + (SELECT r AS z FROM t4 WHERE q=11) AS f + WHERE e.r=f.z + } +} {1 1 11 111 111} +ifcapable view { +do_test select6-8.6 { + is_flat { + SELECT * FROM + (SELECT y, p, q, r FROM + (SELECT t1.y AS y, t2.b AS b FROM t1, t2 WHERE t1.x=t2.a) AS m, + (SELECT t3.p AS p, t3.q AS q, t4.r AS r FROM t3 NATURAL JOIN t4) as n + WHERE y=p) AS e, + (SELECT r AS z FROM t4 WHERE q=11) AS f + WHERE e.r=f.z + } +} {1} +} ;# ifcapable view + +# Ticket #1634 +# +do_test select6-9.1 { + execsql { + SELECT a.x, b.x FROM t1 AS a, (SELECT x FROM t1 LIMIT 2) AS b + ORDER BY 1, 2 + } +} {1 1 1 2 2 1 2 2 3 1 3 2 4 1 4 2} +do_test select6-9.2 { + execsql { + SELECT x FROM (SELECT x FROM t1 LIMIT 2); + } +} {1 2} +do_test select6-9.3 { + execsql { + SELECT x FROM (SELECT x FROM t1 LIMIT 2 OFFSET 1); + } +} {2 3} +do_test select6-9.4 { + execsql { + SELECT x FROM (SELECT x FROM t1) LIMIT 2; + } +} {1 2} +do_test select6-9.5 { + execsql { + SELECT x FROM (SELECT x FROM t1) LIMIT 2 OFFSET 1; + } +} {2 3} +do_test select6-9.6 { + execsql { + SELECT x FROM (SELECT x FROM t1 LIMIT 2) LIMIT 3; + } +} {1 2} +do_test select6-9.7 { + execsql { + SELECT x FROM (SELECT x FROM t1 LIMIT -1) LIMIT 3; + } +} {1 2 3} +do_test select6-9.8 { + execsql { + SELECT x FROM (SELECT x FROM t1 LIMIT -1); + } +} {1 2 3 4} +do_test select6-9.9 { + execsql { + SELECT x FROM (SELECT x FROM t1 LIMIT -1 OFFSET 1); + } +} {2 3 4} +do_test select6-9.10 { + execsql { + SELECT x, y FROM (SELECT x, (SELECT 10+x) y FROM t1 LIMIT -1 OFFSET 1); + } +} {2 12 3 13 4 14} +do_test select6-9.11 { + execsql { + SELECT x, y FROM (SELECT x, (SELECT 10)+x y FROM t1 LIMIT -1 OFFSET 1); + } +} {2 12 3 13 4 14} + + + +finish_test |