449 lines
11 KiB
Plaintext
449 lines
11 KiB
Plaintext
|
# 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 1.30 2006/06/20 11:01:09 danielk1977 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} {pow(2,$j)<$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
|
||
|
|
#
|
||
|
|
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
|
||
|
|
|
||
|
|
finish_test
|