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|
# 2008 October 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 UPDATE and DELETE statements.
#
# $Id: wherelimit.test,v 1.2 2008/10/10 18:25:46 shane Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
proc create_test_data {size} {
# Build some test data
#
execsql {
DROP TABLE IF EXISTS t1;
CREATE TABLE t1(x int, y int);
BEGIN;
}
for {set i 1} {$i<=$size} {incr i} {
for {set j 1} {$j<=$size} {incr j} {
execsql "INSERT INTO t1 VALUES([expr {$i}],[expr {$j}])"
}
}
execsql {
COMMIT;
}
return {}
}
ifcapable {update_delete_limit} {
execsql { CREATE TABLE t1(x, y) }
# check syntax error support
do_test wherelimit-0.1 {
catchsql {DELETE FROM t1 ORDER BY x}
} {1 {ORDER BY without LIMIT on DELETE}}
do_test wherelimit-0.2 {
catchsql {DELETE FROM t1 WHERE x=1 ORDER BY x}
} {1 {ORDER BY without LIMIT on DELETE}}
do_test wherelimit-0.3 {
catchsql {UPDATE t1 SET y=1 WHERE x=1 ORDER BY x}
} {1 {ORDER BY without LIMIT on UPDATE}}
# no AS on table sources
#
# UPDATE: As of version 3.24, AS clauses are allowed as part of
# UPDATE or DELETE statements.
do_test wherelimit-0.4 {
catchsql {DELETE FROM t1 AS a WHERE a.x=1}
} {0 {}}
do_test wherelimit-0.5.1 {
catchsql {UPDATE t1 AS a SET y=1 WHERE x=1}
} {0 {}}
do_test wherelimit-0.5.2 {
catchsql {UPDATE t1 AS a SET y=1 WHERE t1.x=1}
} {1 {no such column: t1.x}}
# OFFSET w/o LIMIT
do_test wherelimit-0.6 {
catchsql {DELETE FROM t1 WHERE x=1 OFFSET 2}
} {1 {near "OFFSET": syntax error}}
do_test wherelimit-0.7 {
catchsql {UPDATE t1 SET y=1 WHERE x=1 OFFSET 2}
} {1 {near "OFFSET": syntax error}}
execsql { DROP TABLE t1 }
# check deletes w/o where clauses but with limit/offsets
create_test_data 5
do_test wherelimit-1.0 {
execsql {SELECT count(*) FROM t1}
} {25}
do_test wherelimit-1.1 {
execsql {DELETE FROM t1}
execsql {SELECT count(*) FROM t1}
} {0}
create_test_data 5
do_test wherelimit-1.2 {
execsql {DELETE FROM t1 LIMIT 5}
execsql {SELECT count(*) FROM t1}
} {20}
do_test wherelimit-1.3 {
# limit 5
execsql {DELETE FROM t1 ORDER BY x LIMIT 5}
execsql {SELECT count(*) FROM t1}
} {15}
create_test_data 4
do_test wherelimit-1.3b {
# limit 5
execsql {DELETE FROM t1 RETURNING x, y, '|' ORDER BY x, y LIMIT 5}
} {1 1 | 1 2 | 1 3 | 1 4 | 2 1 |}
do_test wherelimit-1.3c {
execsql {SELECT count(*) FROM t1}
} {11}
do_test wherelimit-1.4 {
# limit 5, offset 2
execsql {DELETE FROM t1 RETURNING x, y, '|' ORDER BY x LIMIT 5 OFFSET 2}
} {2 4 | 3 1 | 3 2 | 3 3 | 3 4 |}
do_test wherelimit-1.4cnt {
execsql {SELECT count(*) FROM t1}
} {6}
do_test wherelimit-1.5 {
# limit 5, offset -2
execsql {DELETE FROM t1 ORDER BY x LIMIT 5 OFFSET -2}
execsql {SELECT count(*) FROM t1}
} {1}
do_test wherelimit-1.6 {
# limit -5 (no limit), offset 2
execsql {DELETE FROM t1 ORDER BY x LIMIT 2, -5}
execsql {SELECT count(*) FROM t1}
} {1}
do_test wherelimit-1.7 {
# limit 5, offset -2 (no offset)
execsql {DELETE FROM t1 ORDER BY x LIMIT -2, 5}
execsql {SELECT count(*) FROM t1}
} {0}
create_test_data 5
do_test wherelimit-1.8 {
# limit -5 (no limit), offset -2 (no offset)
execsql {DELETE FROM t1 ORDER BY x LIMIT -2, -5}
execsql {SELECT count(*) FROM t1}
} {0}
create_test_data 3
do_test wherelimit-1.9 {
# limit 5, offset 2
execsql {DELETE FROM t1 ORDER BY x LIMIT 2, 5}
execsql {SELECT count(*) FROM t1}
} {4}
do_test wherelimit-1.10 {
# limit 5, offset 5
execsql {DELETE FROM t1 ORDER BY x LIMIT 5 OFFSET 5}
execsql {SELECT count(*) FROM t1}
} {4}
do_test wherelimit-1.11 {
# limit 50, offset 30
execsql {DELETE FROM t1 ORDER BY x LIMIT 50 OFFSET 30}
execsql {SELECT count(*) FROM t1}
} {4}
do_test wherelimit-1.12 {
# limit 50, offset 30
execsql {DELETE FROM t1 ORDER BY x LIMIT 30, 50}
execsql {SELECT count(*) FROM t1}
} {4}
do_test wherelimit-1.13 {
execsql {DELETE FROM t1 ORDER BY x LIMIT 50 OFFSET 50}
execsql {SELECT count(*) FROM t1}
} {4}
create_test_data 6
do_test wherelimit-2.0 {
execsql {SELECT count(*) FROM t1}
} {36}
do_test wherelimit-2.1 {
execsql {DELETE FROM t1 WHERE x=1}
execsql {SELECT count(*) FROM t1}
} {30}
create_test_data 6
do_test wherelimit-2.2 {
execsql {DELETE FROM t1 WHERE x=1 LIMIT 5}
execsql {SELECT count(*) FROM t1}
} {31}
do_test wherelimit-2.3 {
# limit 5
execsql {DELETE FROM t1 WHERE x=1 ORDER BY x LIMIT 5}
execsql {SELECT count(*) FROM t1}
} {30}
do_test wherelimit-2.4 {
# limit 5, offset 2
execsql {DELETE FROM t1 WHERE x=2 ORDER BY x LIMIT 5 OFFSET 2}
execsql {SELECT count(*) FROM t1}
} {26}
do_test wherelimit-2.5 {
# limit 5, offset -2
execsql {DELETE FROM t1 WHERE x=2 ORDER BY x LIMIT 5 OFFSET -2}
execsql {SELECT count(*) FROM t1}
} {24}
do_test wherelimit-2.6 {
# limit -5 (no limit), offset 2
execsql {DELETE FROM t1 WHERE x=3 ORDER BY x LIMIT 2, -5}
execsql {SELECT count(*) FROM t1}
} {20}
do_test wherelimit-2.7 {
# limit 5, offset -2 (no offset)
execsql {DELETE FROM t1 WHERE x=3 ORDER BY x LIMIT -2, 5}
execsql {SELECT count(*) FROM t1}
} {18}
do_test wherelimit-2.8 {
# limit -5 (no limit), offset -2 (no offset)
execsql {DELETE FROM t1 WHERE x=4 ORDER BY x LIMIT -2, -5}
execsql {SELECT count(*) FROM t1}
} {12}
create_test_data 6
do_test wherelimit-2.9 {
# limit 5, offset 2
execsql {DELETE FROM t1 WHERE x=5 ORDER BY x LIMIT 2, 5}
execsql {SELECT count(*) FROM t1}
} {32}
do_test wherelimit-2.10 {
# limit 5, offset 5
execsql {DELETE FROM t1 WHERE x=6 ORDER BY x LIMIT 5 OFFSET 5}
execsql {SELECT count(*) FROM t1}
} {31}
do_test wherelimit-2.11 {
# limit 50, offset 30
execsql {DELETE FROM t1 WHERE x=1 ORDER BY x LIMIT 50 OFFSET 30}
execsql {SELECT count(*) FROM t1}
} {31}
do_test wherelimit-2.12 {
# limit 50, offset 30
execsql {DELETE FROM t1 WHERE x=2 ORDER BY x LIMIT 30, 50}
execsql {SELECT count(*) FROM t1}
} {31}
do_test wherelimit-2.13 {
execsql {DELETE FROM t1 WHERE x=3 ORDER BY x LIMIT 50 OFFSET 50}
execsql {SELECT count(*) FROM t1}
} {31}
create_test_data 6
do_test wherelimit-3.0 {
execsql {SELECT count(*) FROM t1}
} {36}
do_test wherelimit-3.1 {
execsql {UPDATE t1 SET y=1 WHERE x=1}
execsql {SELECT count(*) FROM t1 WHERE y=1}
} {11}
create_test_data 6
do_test wherelimit-3.2 {
execsql {UPDATE t1 SET y=1 WHERE x=1 RETURNING x, y, '|' LIMIT 5}
} {1 1 | 1 1 | 1 1 | 1 1 | 1 1 |}
do_test wherelimit-3.2cnt {
execsql {SELECT count(*) FROM t1 WHERE y=1}
} {10}
do_test wherelimit-3.3 {
# limit 5
execsql {UPDATE t1 SET y=2 WHERE x=2 ORDER BY x LIMIT 5}
execsql {SELECT count(*) FROM t1 WHERE y=2}
} {9}
create_test_data 6
do_test wherelimit-3.4 {
# limit 5, offset 2
execsql {UPDATE t1 SET y=2 WHERE x=2 ORDER BY x LIMIT 5 OFFSET 2}
execsql {SELECT count(*) FROM t1 WHERE y=1}
} {6}
do_test wherelimit-3.5 {
# limit 5, offset -2
execsql {UPDATE t1 SET y=2 WHERE x=2 ORDER BY x LIMIT 5 OFFSET -2}
execsql {SELECT count(*) FROM t1 WHERE y=1}
} {5}
do_test wherelimit-3.6 {
# limit -5 (no limit), offset 2
execsql {UPDATE t1 SET y=3 WHERE x=3 ORDER BY x LIMIT 2, -5}
execsql {SELECT count(*) FROM t1 WHERE y=3}
} {8}
do_test wherelimit-3.7 {
# limit 5, offset -2 (no offset)
execsql {UPDATE t1 SET y=3 WHERE x=3 ORDER BY x LIMIT -2, 5}
execsql {SELECT count(*) FROM t1 WHERE y=3}
} {10}
do_test wherelimit-3.8 {
# limit -5 (no limit), offset -2 (no offset)
execsql {UPDATE t1 SET y=4 WHERE x=4 ORDER BY x LIMIT -2, -5}
execsql {SELECT count(*) FROM t1 WHERE y=4}
} {9}
create_test_data 6
do_test wherelimit-3.9 {
# limit 5, offset 2
execsql {UPDATE t1 SET y=4 WHERE x=5 ORDER BY x LIMIT 2, 5}
execsql {SELECT count(*) FROM t1 WHERE y=4}
} {9}
do_test wherelimit-3.10 {
# limit 5, offset 5
execsql {UPDATE t1 SET y=4 WHERE x=6 ORDER BY x LIMIT 5 OFFSET 5}
execsql {SELECT count(*) FROM t1 WHERE y=1}
} {6}
do_test wherelimit-3.11 {
# limit 50, offset 30
execsql {UPDATE t1 SET y=1 WHERE x=1 ORDER BY x LIMIT 50 OFFSET 30}
execsql {SELECT count(*) FROM t1 WHERE y=1}
} {6}
do_test wherelimit-3.12 {
# limit 50, offset 30
execsql {UPDATE t1 SET y=1 WHERE x=2 ORDER BY x LIMIT 30, 50}
execsql {SELECT count(*) FROM t1 WHERE y=1}
} {6}
do_test wherelimit-3.13 {
execsql {UPDATE t1 SET y=1 WHERE x=3 ORDER BY x LIMIT 50 OFFSET 50}
execsql {SELECT count(*) FROM t1 WHERE y=1}
} {6}
# Cannot use a LIMIT for UPDATE or DELETE against a WITHOUT ROWID table
# or a VIEW. (We should fix this someday).
#
db close
sqlite3 db :memory:
do_execsql_test wherelimit-4.1 {
CREATE TABLE t1(a int);
INSERT INTO t1 VALUES(1);
INSERT INTO t1 VALUES(2);
INSERT INTO t1 VALUES(3);
CREATE TABLE t2(a int);
INSERT INTO t2 SELECT a+100 FROM t1;
CREATE VIEW tv(r,a) AS
SELECT rowid, a FROM t2 UNION ALL SELECT rowid, a FROM t1;
CREATE TRIGGER tv_del INSTEAD OF DELETE ON tv
BEGIN
DELETE FROM t1 WHERE rowid=old.r;
DELETE FROM t2 WHERE rowid=old.r;
END;
} {}
do_catchsql_test wherelimit-4.2 {
DELETE FROM tv WHERE 1 LIMIT 2;
} {0 {}}
do_catchsql_test wherelimit-4.3 {
DELETE FROM tv WHERE 1 ORDER BY a LIMIT 2;
} {0 {}}
do_execsql_test wherelimit-4.10 {
CREATE TABLE t3(a,b,c,d TEXT, PRIMARY KEY(a,b)) WITHOUT ROWID;
INSERT INTO t3(a,b,c,d) VALUES(1,2,3,4),(5,6,7,8),(9,10,11,12);
} {}
do_catchsql_test wherelimit-4.11 {
DELETE FROM t3 WHERE a=5 LIMIT 2;
} {0 {}}
do_execsql_test wherelimit-4.12 {
SELECT a,b,c,d FROM t3 ORDER BY 1;
} {1 2 3 4 9 10 11 12}
}
finish_test
|
