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sqlite/test/limit.test
drh bc7819d176 Fix the processing of implied LIMIT clauses when flattening a compound 
query.

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2021-03-05 14:08:45 +00:00

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# 2001 November 6
#
# 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 the LIMIT ... OFFSET ... clause
# of SELECT statements.
#
# $Id: limit.test,v 1.32 2008/08/02 03:50:39 drh Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
# Build some test data
#
execsql {
CREATE TABLE t1(x int, y int);
BEGIN;
}
for {set i 1} {$i<=32} {incr i} {
for {set j 0} {(1<<$j)<$i} {incr j} {}
execsql "INSERT INTO t1 VALUES([expr {32-$i}],[expr {10-$j}])"
}
execsql {
COMMIT;
}
do_test limit-1.0 {
execsql {SELECT count(*) FROM t1}
} {32}
do_test limit-1.1 {
execsql {SELECT count(*) FROM t1 LIMIT 5}
} {32}
do_test limit-1.2.1 {
execsql {SELECT x FROM t1 ORDER BY x LIMIT 5}
} {0 1 2 3 4}
do_test limit-1.2.2 {
execsql {SELECT x FROM t1 ORDER BY x LIMIT 5 OFFSET 2}
} {2 3 4 5 6}
do_test limit-1.2.3 {
execsql {SELECT x FROM t1 ORDER BY x+1 LIMIT 5 OFFSET -2}
} {0 1 2 3 4}
do_test limit-1.2.4 {
execsql {SELECT x FROM t1 ORDER BY x+1 LIMIT 2, -5}
} {2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31}
do_test limit-1.2.5 {
execsql {SELECT x FROM t1 ORDER BY x+1 LIMIT -2, 5}
} {0 1 2 3 4}
do_test limit-1.2.6 {
execsql {SELECT x FROM t1 ORDER BY x+1 LIMIT -2, -5}
} {0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31}
do_test limit-1.2.7 {
execsql {SELECT x FROM t1 ORDER BY x LIMIT 2, 5}
} {2 3 4 5 6}
do_test limit-1.3 {
execsql {SELECT x FROM t1 ORDER BY x LIMIT 5 OFFSET 5}
} {5 6 7 8 9}
do_test limit-1.4.1 {
execsql {SELECT x FROM t1 ORDER BY x LIMIT 50 OFFSET 30}
} {30 31}
do_test limit-1.4.2 {
execsql {SELECT x FROM t1 ORDER BY x LIMIT 30, 50}
} {30 31}
do_test limit-1.5 {
execsql {SELECT x FROM t1 ORDER BY x LIMIT 50 OFFSET 50}
} {}
do_test limit-1.6 {
execsql {SELECT * FROM t1 AS a, t1 AS b ORDER BY a.x, b.x LIMIT 5}
} {0 5 0 5 0 5 1 5 0 5 2 5 0 5 3 5 0 5 4 5}
do_test limit-1.7 {
execsql {SELECT * FROM t1 AS a, t1 AS b ORDER BY a.x, b.x LIMIT 5 OFFSET 32}
} {1 5 0 5 1 5 1 5 1 5 2 5 1 5 3 5 1 5 4 5}
ifcapable {view && subquery} {
do_test limit-2.1 {
execsql {
CREATE VIEW v1 AS SELECT * FROM t1 LIMIT 2;
SELECT count(*) FROM (SELECT * FROM v1);
}
} 2
} ;# ifcapable view
do_test limit-2.2 {
execsql {
CREATE TABLE t2 AS SELECT * FROM t1 LIMIT 2;
SELECT count(*) FROM t2;
}
} 2
ifcapable subquery {
do_test limit-2.3 {
execsql {
SELECT count(*) FROM t1 WHERE rowid IN (SELECT rowid FROM t1 LIMIT 2);
}
} 2
}
ifcapable subquery {
do_test limit-3.1 {
execsql {
SELECT z FROM (SELECT y*10+x AS z FROM t1 ORDER BY x LIMIT 10)
ORDER BY z LIMIT 5;
}
} {50 51 52 53 54}
}
do_test limit-4.1 {
ifcapable subquery {
execsql {
BEGIN;
CREATE TABLE t3(x);
INSERT INTO t3 SELECT x FROM t1 ORDER BY x LIMIT 10 OFFSET 1;
INSERT INTO t3 SELECT x+(SELECT max(x) FROM t3) FROM t3;
INSERT INTO t3 SELECT x+(SELECT max(x) FROM t3) FROM t3;
INSERT INTO t3 SELECT x+(SELECT max(x) FROM t3) FROM t3;
INSERT INTO t3 SELECT x+(SELECT max(x) FROM t3) FROM t3;
INSERT INTO t3 SELECT x+(SELECT max(x) FROM t3) FROM t3;
INSERT INTO t3 SELECT x+(SELECT max(x) FROM t3) FROM t3;
INSERT INTO t3 SELECT x+(SELECT max(x) FROM t3) FROM t3;
INSERT INTO t3 SELECT x+(SELECT max(x) FROM t3) FROM t3;
INSERT INTO t3 SELECT x+(SELECT max(x) FROM t3) FROM t3;
INSERT INTO t3 SELECT x+(SELECT max(x) FROM t3) FROM t3;
END;
SELECT count(*) FROM t3;
}
} else {
execsql {
BEGIN;
CREATE TABLE t3(x);
INSERT INTO t3 SELECT x FROM t1 ORDER BY x LIMIT 10 OFFSET 1;
}
for {set i 0} {$i<10} {incr i} {
set max_x_t3 [execsql {SELECT max(x) FROM t3}]
execsql "INSERT INTO t3 SELECT x+$max_x_t3 FROM t3;"
}
execsql {
END;
SELECT count(*) FROM t3;
}
}
} {10240}
do_test limit-4.2 {
execsql {
SELECT x FROM t3 LIMIT 2 OFFSET 10000
}
} {10001 10002}
do_test limit-4.3 {
execsql {
CREATE TABLE t4 AS SELECT x,
'abcdefghijklmnopqrstuvwyxz ABCDEFGHIJKLMNOPQRSTUVWYXZ' || x ||
'abcdefghijklmnopqrstuvwyxz ABCDEFGHIJKLMNOPQRSTUVWYXZ' || x ||
'abcdefghijklmnopqrstuvwyxz ABCDEFGHIJKLMNOPQRSTUVWYXZ' || x ||
'abcdefghijklmnopqrstuvwyxz ABCDEFGHIJKLMNOPQRSTUVWYXZ' || x ||
'abcdefghijklmnopqrstuvwyxz ABCDEFGHIJKLMNOPQRSTUVWYXZ' || x AS y
FROM t3 LIMIT 1000;
SELECT x FROM t4 ORDER BY y DESC LIMIT 1 OFFSET 999;
}
} {1000}
do_test limit-5.1 {
execsql {
CREATE TABLE t5(x,y);
INSERT INTO t5 SELECT x-y, x+y FROM t1 WHERE x BETWEEN 10 AND 15
ORDER BY x LIMIT 2;
SELECT * FROM t5 ORDER BY x;
}
} {5 15 6 16}
do_test limit-5.2 {
execsql {
DELETE FROM t5;
INSERT INTO t5 SELECT x-y, x+y FROM t1 WHERE x BETWEEN 10 AND 15
ORDER BY x DESC LIMIT 2;
SELECT * FROM t5 ORDER BY x;
}
} {9 19 10 20}
do_test limit-5.3 {
execsql {
DELETE FROM t5;
INSERT INTO t5 SELECT x-y, x+y FROM t1 WHERE x ORDER BY x DESC LIMIT 31;
SELECT * FROM t5 ORDER BY x LIMIT 2;
}
} {-4 6 -3 7}
do_test limit-5.4 {
execsql {
SELECT * FROM t5 ORDER BY x DESC, y DESC LIMIT 2;
}
} {21 41 21 39}
do_test limit-5.5 {
execsql {
DELETE FROM t5;
INSERT INTO t5 SELECT a.x*100+b.x, a.y*100+b.y FROM t1 AS a, t1 AS b
ORDER BY 1, 2 LIMIT 1000;
SELECT count(*), sum(x), sum(y), min(x), max(x), min(y), max(y) FROM t5;
}
} {1000 1528204 593161 0 3107 505 1005}
# There is some contraversy about whether LIMIT 0 should be the same as
# no limit at all or if LIMIT 0 should result in zero output rows.
#
do_test limit-6.1 {
execsql {
BEGIN;
CREATE TABLE t6(a);
INSERT INTO t6 VALUES(1);
INSERT INTO t6 VALUES(2);
INSERT INTO t6 SELECT a+2 FROM t6;
COMMIT;
SELECT * FROM t6;
}
} {1 2 3 4}
do_test limit-6.2 {
execsql {
SELECT * FROM t6 LIMIT -1 OFFSET -1;
}
} {1 2 3 4}
do_test limit-6.3 {
execsql {
SELECT * FROM t6 LIMIT 2 OFFSET -123;
}
} {1 2}
do_test limit-6.4 {
execsql {
SELECT * FROM t6 LIMIT -432 OFFSET 2;
}
} {3 4}
do_test limit-6.5 {
execsql {
SELECT * FROM t6 LIMIT -1
}
} {1 2 3 4}
do_test limit-6.6 {
execsql {
SELECT * FROM t6 LIMIT -1 OFFSET 1
}
} {2 3 4}
do_test limit-6.7 {
execsql {
SELECT * FROM t6 LIMIT 0
}
} {}
do_test limit-6.8 {
execsql {
SELECT * FROM t6 LIMIT 0 OFFSET 1
}
} {}
# Make sure LIMIT works well with compound SELECT statements.
# Ticket #393
#
# EVIDENCE-OF: R-13512-64012 In a compound SELECT, only the last or
# right-most simple SELECT may contain a LIMIT clause.
#
# EVIDENCE-OF: R-03782-50113 In a compound SELECT, the LIMIT clause
# applies to the entire compound, not just the final SELECT.
#
ifcapable compound {
do_test limit-7.1.1 {
catchsql {
SELECT x FROM t2 LIMIT 5 UNION ALL SELECT a FROM t6;
}
} {1 {LIMIT clause should come after UNION ALL not before}}
do_test limit-7.1.2 {
catchsql {
SELECT x FROM t2 LIMIT 5 UNION SELECT a FROM t6;
}
} {1 {LIMIT clause should come after UNION not before}}
do_test limit-7.1.3 {
catchsql {
SELECT x FROM t2 LIMIT 5 EXCEPT SELECT a FROM t6 LIMIT 3;
}
} {1 {LIMIT clause should come after EXCEPT not before}}
do_test limit-7.1.4 {
catchsql {
SELECT x FROM t2 LIMIT 0,5 INTERSECT SELECT a FROM t6;
}
} {1 {LIMIT clause should come after INTERSECT not before}}
do_test limit-7.2 {
execsql {
SELECT x FROM t2 UNION ALL SELECT a FROM t6 LIMIT 5;
}
} {31 30 1 2 3}
do_test limit-7.3 {
execsql {
SELECT x FROM t2 UNION ALL SELECT a FROM t6 LIMIT 3 OFFSET 1;
}
} {30 1 2}
do_test limit-7.4 {
execsql {
SELECT x FROM t2 UNION ALL SELECT a FROM t6 ORDER BY 1 LIMIT 3 OFFSET 1;
}
} {2 3 4}
do_test limit-7.5 {
execsql {
SELECT x FROM t2 UNION SELECT x+2 FROM t2 LIMIT 2 OFFSET 1;
}
} {31 32}
do_test limit-7.6 {
execsql {
SELECT x FROM t2 UNION SELECT x+2 FROM t2 ORDER BY 1 DESC LIMIT 2 OFFSET 1;
}
} {32 31}
do_test limit-7.7 {
execsql {
SELECT a+9 FROM t6 EXCEPT SELECT y FROM t2 LIMIT 2;
}
} {11 12}
do_test limit-7.8 {
execsql {
SELECT a+9 FROM t6 EXCEPT SELECT y FROM t2 ORDER BY 1 DESC LIMIT 2;
}
} {13 12}
do_test limit-7.9 {
execsql {
SELECT a+26 FROM t6 INTERSECT SELECT x FROM t2 LIMIT 1;
}
} {30}
do_test limit-7.10 {
execsql {
SELECT a+27 FROM t6 INTERSECT SELECT x FROM t2 LIMIT 1;
}
} {30}
do_test limit-7.11 {
execsql {
SELECT a+27 FROM t6 INTERSECT SELECT x FROM t2 LIMIT 1 OFFSET 1;
}
} {31}
do_test limit-7.12 {
execsql {
SELECT a+27 FROM t6 INTERSECT SELECT x FROM t2
ORDER BY 1 DESC LIMIT 1 OFFSET 1;
}
} {30}
} ;# ifcapable compound
# Tests for limit in conjunction with distinct. The distinct should
# occur before both the limit and the offset. Ticket #749.
#
do_test limit-8.1 {
execsql {
SELECT DISTINCT cast(round(x/100) as integer) FROM t3 LIMIT 5;
}
} {0 1 2 3 4}
do_test limit-8.2 {
execsql {
SELECT DISTINCT cast(round(x/100) as integer) FROM t3 LIMIT 5 OFFSET 5;
}
} {5 6 7 8 9}
do_test limit-8.3 {
execsql {
SELECT DISTINCT cast(round(x/100) as integer) FROM t3 LIMIT 5 OFFSET 25;
}
} {25 26 27 28 29}
# Make sure limits on multiple subqueries work correctly.
# Ticket #1035
#
ifcapable subquery {
do_test limit-9.1 {
execsql {
SELECT * FROM (SELECT * FROM t6 LIMIT 3);
}
} {1 2 3}
}
do_test limit-9.2.1 {
execsql {
CREATE TABLE t7 AS SELECT * FROM t6;
}
} {}
ifcapable subquery {
do_test limit-9.2.2 {
execsql {
SELECT * FROM (SELECT * FROM t7 LIMIT 3);
}
} {1 2 3}
}
ifcapable compound {
ifcapable subquery {
do_test limit-9.3 {
execsql {
SELECT * FROM (SELECT * FROM t6 LIMIT 3)
UNION
SELECT * FROM (SELECT * FROM t7 LIMIT 3)
ORDER BY 1
}
} {1 2 3}
do_test limit-9.4 {
execsql {
SELECT * FROM (SELECT * FROM t6 LIMIT 3)
UNION
SELECT * FROM (SELECT * FROM t7 LIMIT 3)
ORDER BY 1
LIMIT 2
}
} {1 2}
}
do_test limit-9.5 {
catchsql {
SELECT * FROM t6 LIMIT 3
UNION
SELECT * FROM t7 LIMIT 3
}
} {1 {LIMIT clause should come after UNION not before}}
}
# Test LIMIT and OFFSET using SQL variables.
do_test limit-10.1 {
set limit 10
db eval {
SELECT x FROM t1 LIMIT :limit;
}
} {31 30 29 28 27 26 25 24 23 22}
do_test limit-10.2 {
set limit 5
set offset 5
db eval {
SELECT x FROM t1 LIMIT :limit OFFSET :offset;
}
} {26 25 24 23 22}
do_test limit-10.3 {
set limit -1
db eval {
SELECT x FROM t1 WHERE x<10 LIMIT :limit;
}
} {9 8 7 6 5 4 3 2 1 0}
do_test limit-10.4 {
set limit 1.5
set rc [catch {
db eval {
SELECT x FROM t1 WHERE x<10 LIMIT :limit;
} } msg]
list $rc $msg
} {1 {datatype mismatch}}
do_test limit-10.5 {
set limit "hello world"
set rc [catch {
db eval {
SELECT x FROM t1 WHERE x<10 LIMIT :limit;
} } msg]
list $rc $msg
} {1 {datatype mismatch}}
ifcapable subquery {
do_test limit-11.1 {
db eval {
SELECT x FROM (SELECT x FROM t1 ORDER BY x LIMIT 0) ORDER BY x
}
} {}
} ;# ifcapable subquery
# Test error processing.
#
do_test limit-12.1 {
catchsql {
SELECT * FROM t1 LIMIT replace(1)
}
} {1 {wrong number of arguments to function replace()}}
do_test limit-12.2 {
catchsql {
SELECT * FROM t1 LIMIT 5 OFFSET replace(1)
}
} {1 {wrong number of arguments to function replace()}}
do_test limit-12.3 {
catchsql {
SELECT * FROM t1 LIMIT x
}
} {1 {no such column: x}}
do_test limit-12.4 {
catchsql {
SELECT * FROM t1 LIMIT 1 OFFSET x
}
} {1 {no such column: x}}
# Ticket [db4d96798da8b]
# LIMIT does not work with nested views containing UNION ALL
#
do_test limit-13.1 {
db eval {
CREATE TABLE t13(x);
INSERT INTO t13 VALUES(1),(2);
CREATE VIEW v13a AS SELECT x AS y FROM t13;
CREATE VIEW v13b AS SELECT y AS z FROM v13a UNION ALL SELECT y+10 FROM v13a;
CREATE VIEW v13c AS SELECT z FROM v13b UNION ALL SELECT z+20 FROM v13b;
}
} {}
do_test limit-13.2 {
db eval {SELECT z FROM v13c LIMIT 1}
} {1}
do_test limit-13.3 {
db eval {SELECT z FROM v13c LIMIT 2}
} {1 2}
do_test limit-13.4 {
db eval {SELECT z FROM v13c LIMIT 3}
} {1 2 11}
do_test limit-13.5 {
db eval {SELECT z FROM v13c LIMIT 4}
} {1 2 11 12}
do_test limit-13.6 {
db eval {SELECT z FROM v13c LIMIT 5}
} {1 2 11 12 21}
do_test limit-13.7 {
db eval {SELECT z FROM v13c LIMIT 6}
} {1 2 11 12 21 22}
do_test limit-13.8 {
db eval {SELECT z FROM v13c LIMIT 7}
} {1 2 11 12 21 22 31}
do_test limit-13.9 {
db eval {SELECT z FROM v13c LIMIT 8}
} {1 2 11 12 21 22 31 32}
do_test limit-13.10 {
db eval {SELECT z FROM v13c LIMIT 9}
} {1 2 11 12 21 22 31 32}
do_test limit-13.11 {
db eval {SELECT z FROM v13c LIMIT 1 OFFSET 1}
} {2}
do_test limit-13.12 {
db eval {SELECT z FROM v13c LIMIT 2 OFFSET 1}
} {2 11}
do_test limit-13.13 {
db eval {SELECT z FROM v13c LIMIT 3 OFFSET 1}
} {2 11 12}
do_test limit-13.14 {
db eval {SELECT z FROM v13c LIMIT 4 OFFSET 1}
} {2 11 12 21}
do_test limit-13.15 {
db eval {SELECT z FROM v13c LIMIT 5 OFFSET 1}
} {2 11 12 21 22}
do_test limit-13.16 {
db eval {SELECT z FROM v13c LIMIT 6 OFFSET 1}
} {2 11 12 21 22 31}
do_test limit-13.17 {
db eval {SELECT z FROM v13c LIMIT 7 OFFSET 1}
} {2 11 12 21 22 31 32}
do_test limit-13.18 {
db eval {SELECT z FROM v13c LIMIT 8 OFFSET 1}
} {2 11 12 21 22 31 32}
do_test limit-13.21 {
db eval {SELECT z FROM v13c LIMIT 1 OFFSET 2}
} {11}
do_test limit-13.22 {
db eval {SELECT z FROM v13c LIMIT 2 OFFSET 2}
} {11 12}
do_test limit-13.23 {
db eval {SELECT z FROM v13c LIMIT 3 OFFSET 2}
} {11 12 21}
do_test limit-13.24 {
db eval {SELECT z FROM v13c LIMIT 4 OFFSET 2}
} {11 12 21 22}
do_test limit-13.25 {
db eval {SELECT z FROM v13c LIMIT 5 OFFSET 2}
} {11 12 21 22 31}
do_test limit-13.26 {
db eval {SELECT z FROM v13c LIMIT 6 OFFSET 2}
} {11 12 21 22 31 32}
do_test limit-13.27 {
db eval {SELECT z FROM v13c LIMIT 7 OFFSET 2}
} {11 12 21 22 31 32}
do_test limit-13.31 {
db eval {SELECT z FROM v13c LIMIT 1 OFFSET 3}
} {12}
do_test limit-13.32 {
db eval {SELECT z FROM v13c LIMIT 2 OFFSET 3}
} {12 21}
do_test limit-13.33 {
db eval {SELECT z FROM v13c LIMIT 3 OFFSET 3}
} {12 21 22}
do_test limit-13.34 {
db eval {SELECT z FROM v13c LIMIT 4 OFFSET 3}
} {12 21 22 31}
do_test limit-13.35 {
db eval {SELECT z FROM v13c LIMIT 5 OFFSET 3}
} {12 21 22 31 32}
do_test limit-13.36 {
db eval {SELECT z FROM v13c LIMIT 6 OFFSET 3}
} {12 21 22 31 32}
do_test limit-13.41 {
db eval {SELECT z FROM v13c LIMIT 1 OFFSET 4}
} {21}
do_test limit-13.42 {
db eval {SELECT z FROM v13c LIMIT 2 OFFSET 4}
} {21 22}
do_test limit-13.43 {
db eval {SELECT z FROM v13c LIMIT 3 OFFSET 4}
} {21 22 31}
do_test limit-13.44 {
db eval {SELECT z FROM v13c LIMIT 4 OFFSET 4}
} {21 22 31 32}
do_test limit-13.45 {
db eval {SELECT z FROM v13c LIMIT 5 OFFSET 4}
} {21 22 31 32}
do_test limit-13.51 {
db eval {SELECT z FROM v13c LIMIT 1 OFFSET 5}
} {22}
do_test limit-13.52 {
db eval {SELECT z FROM v13c LIMIT 2 OFFSET 5}
} {22 31}
do_test limit-13.53 {
db eval {SELECT z FROM v13c LIMIT 3 OFFSET 5}
} {22 31 32}
do_test limit-13.54 {
db eval {SELECT z FROM v13c LIMIT 4 OFFSET 5}
} {22 31 32}
do_test limit-13.61 {
db eval {SELECT z FROM v13c LIMIT 1 OFFSET 6}
} {31}
do_test limit-13.62 {
db eval {SELECT z FROM v13c LIMIT 2 OFFSET 6}
} {31 32}
do_test limit-13.63 {
db eval {SELECT z FROM v13c LIMIT 3 OFFSET 6}
} {31 32}
do_test limit-13.71 {
db eval {SELECT z FROM v13c LIMIT 1 OFFSET 7}
} {32}
do_test limit-13.72 {
db eval {SELECT z FROM v13c LIMIT 2 OFFSET 7}
} {32}
do_test limit-13.81 {
db eval {SELECT z FROM v13c LIMIT 1 OFFSET 8}
} {}
do_execsql_test limit-14.1 {
SELECT 123 LIMIT 1 OFFSET 0
} {123}
do_execsql_test limit-14.2 {
SELECT 123 LIMIT 1 OFFSET 1
} {}
do_execsql_test limit-14.3 {
SELECT 123 LIMIT 0 OFFSET 0
} {}
do_execsql_test limit-14.4 {
SELECT 123 LIMIT 0 OFFSET 1
} {}
do_execsql_test limit-14.6 {
SELECT 123 LIMIT -1 OFFSET 0
} {123}
do_execsql_test limit-14.7 {
SELECT 123 LIMIT -1 OFFSET 1
} {}
# 2021-03-05 dbsqlfuzz crash-d811039c9f44f2d43199d5889fcf4085ef6221b9
#
reset_db
do_execsql_test limit-15.1 {
CREATE TABLE t1(a PRIMARY KEY, b TEXT);
CREATE TABLE t4(c PRIMARY KEY, d);
CREATE TABLE t5(e PRIMARY KEY, f);
CREATE TABLE t6(g, h);
CREATE TABLE t3_a(k, v);
CREATE TABLE t3_b(k, v);
CREATE VIEW t3 AS SELECT * FROM t3_a UNION ALL SELECT * FROM t3_b;
INSERT INTO t5(e,f) VALUES(500000,'orange');
INSERT INTO t4(c,d) VALUES(300000,'blue'),(400,'green'),(8000,'grey');
INSERT INTO t1(a,b) VALUES(300000,'purple');
INSERT INTO t3_a VALUES(300000,'yellow'),(500,'pink'),(8000,'red');
INSERT INTO t6 default values;
SELECT (
SELECT 100000 FROM
(SELECT 200000 FROM t6 WHERE a = ( SELECT 300000 FROM t3 WHERE a ) ),
(SELECT 400000 FROM t5 WHERE e=500000),
(SELECT 600000 FROM t4 WHERE c=a)
) FROM t1;
} {100000}
finish_test
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