--- /dev/null
+# 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 1.1 2008/10/10 06:02:00 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} {
+
+ # 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
+ do_test wherelimit-0.4 {
+ catchsql {DELETE FROM t1 AS a WHERE x=1}
+ } {1 {near "AS": syntax error}}
+ do_test wherelimit-0.5 {
+ catchsql {UPDATE t1 AS a SET y=1 WHERE x=1}
+ } {1 {near "AS": syntax error}}
+
+ # 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}
+ do_test wherelimit-1.4 {
+ # limit 5, offset 2
+ execsql {DELETE FROM t1 ORDER BY x LIMIT 5 OFFSET 2}
+ execsql {SELECT count(*) FROM t1}
+ } {10}
+ 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}
+ } {5}
+ 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}
+ } {2}
+ 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 LIMIT 5}
+ 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}
+
+}
+
+finish_test
projects / thirdparty / sqlite.git / commitdiff
