/trunk/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 |