285 lines
8.4 KiB
Plaintext
285 lines
8.4 KiB
Plaintext
# 2008 October 6
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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# This file implements regression tests for SQLite library. The
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# focus of this file is testing the LIMIT ... OFFSET ... clause
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# of UPDATE and DELETE statements.
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#
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# $Id: wherelimit.test,v 1.2 2008/10/10 18:25:46 shane Exp $
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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proc create_test_data {size} {
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# Build some test data
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#
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execsql {
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DROP TABLE IF EXISTS t1;
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CREATE TABLE t1(x int, y int);
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BEGIN;
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}
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for {set i 1} {$i<=$size} {incr i} {
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for {set j 1} {$j<=$size} {incr j} {
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execsql "INSERT INTO t1 VALUES([expr {$i}],[expr {$j}])"
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}
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}
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execsql {
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COMMIT;
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}
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return {}
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}
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ifcapable {update_delete_limit} {
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# check syntax error support
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do_test wherelimit-0.1 {
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catchsql {DELETE FROM t1 ORDER BY x}
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} {1 {ORDER BY without LIMIT on DELETE}}
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do_test wherelimit-0.2 {
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catchsql {DELETE FROM t1 WHERE x=1 ORDER BY x}
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} {1 {ORDER BY without LIMIT on DELETE}}
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do_test wherelimit-0.3 {
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catchsql {UPDATE t1 SET y=1 WHERE x=1 ORDER BY x}
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} {1 {ORDER BY without LIMIT on UPDATE}}
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# no AS on table sources
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do_test wherelimit-0.4 {
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catchsql {DELETE FROM t1 AS a WHERE x=1}
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} {1 {near "AS": syntax error}}
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do_test wherelimit-0.5 {
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catchsql {UPDATE t1 AS a SET y=1 WHERE x=1}
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} {1 {near "AS": syntax error}}
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# OFFSET w/o LIMIT
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do_test wherelimit-0.6 {
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catchsql {DELETE FROM t1 WHERE x=1 OFFSET 2}
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} {1 {near "OFFSET": syntax error}}
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do_test wherelimit-0.7 {
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catchsql {UPDATE t1 SET y=1 WHERE x=1 OFFSET 2}
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} {1 {near "OFFSET": syntax error}}
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# check deletes w/o where clauses but with limit/offsets
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create_test_data 5
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do_test wherelimit-1.0 {
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execsql {SELECT count(*) FROM t1}
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} {25}
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do_test wherelimit-1.1 {
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execsql {DELETE FROM t1}
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execsql {SELECT count(*) FROM t1}
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} {0}
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create_test_data 5
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do_test wherelimit-1.2 {
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execsql {DELETE FROM t1 LIMIT 5}
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execsql {SELECT count(*) FROM t1}
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} {20}
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do_test wherelimit-1.3 {
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# limit 5
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execsql {DELETE FROM t1 ORDER BY x LIMIT 5}
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execsql {SELECT count(*) FROM t1}
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} {15}
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do_test wherelimit-1.4 {
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# limit 5, offset 2
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execsql {DELETE FROM t1 ORDER BY x LIMIT 5 OFFSET 2}
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execsql {SELECT count(*) FROM t1}
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} {10}
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do_test wherelimit-1.5 {
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# limit 5, offset -2
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execsql {DELETE FROM t1 ORDER BY x LIMIT 5 OFFSET -2}
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execsql {SELECT count(*) FROM t1}
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} {5}
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do_test wherelimit-1.6 {
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# limit -5 (no limit), offset 2
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execsql {DELETE FROM t1 ORDER BY x LIMIT 2, -5}
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execsql {SELECT count(*) FROM t1}
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} {2}
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do_test wherelimit-1.7 {
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# limit 5, offset -2 (no offset)
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execsql {DELETE FROM t1 ORDER BY x LIMIT -2, 5}
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execsql {SELECT count(*) FROM t1}
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} {0}
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create_test_data 5
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do_test wherelimit-1.8 {
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# limit -5 (no limit), offset -2 (no offset)
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execsql {DELETE FROM t1 ORDER BY x LIMIT -2, -5}
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execsql {SELECT count(*) FROM t1}
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} {0}
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create_test_data 3
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do_test wherelimit-1.9 {
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# limit 5, offset 2
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execsql {DELETE FROM t1 ORDER BY x LIMIT 2, 5}
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execsql {SELECT count(*) FROM t1}
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} {4}
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do_test wherelimit-1.10 {
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# limit 5, offset 5
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execsql {DELETE FROM t1 ORDER BY x LIMIT 5 OFFSET 5}
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execsql {SELECT count(*) FROM t1}
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} {4}
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do_test wherelimit-1.11 {
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# limit 50, offset 30
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execsql {DELETE FROM t1 ORDER BY x LIMIT 50 OFFSET 30}
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execsql {SELECT count(*) FROM t1}
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} {4}
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do_test wherelimit-1.12 {
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# limit 50, offset 30
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execsql {DELETE FROM t1 ORDER BY x LIMIT 30, 50}
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execsql {SELECT count(*) FROM t1}
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} {4}
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do_test wherelimit-1.13 {
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execsql {DELETE FROM t1 ORDER BY x LIMIT 50 OFFSET 50}
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execsql {SELECT count(*) FROM t1}
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} {4}
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create_test_data 6
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do_test wherelimit-2.0 {
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execsql {SELECT count(*) FROM t1}
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} {36}
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do_test wherelimit-2.1 {
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execsql {DELETE FROM t1 WHERE x=1}
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execsql {SELECT count(*) FROM t1}
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} {30}
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create_test_data 6
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do_test wherelimit-2.2 {
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execsql {DELETE FROM t1 WHERE x=1 LIMIT 5}
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execsql {SELECT count(*) FROM t1}
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} {31}
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do_test wherelimit-2.3 {
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# limit 5
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execsql {DELETE FROM t1 WHERE x=1 ORDER BY x LIMIT 5}
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execsql {SELECT count(*) FROM t1}
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} {30}
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do_test wherelimit-2.4 {
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# limit 5, offset 2
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execsql {DELETE FROM t1 WHERE x=2 ORDER BY x LIMIT 5 OFFSET 2}
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execsql {SELECT count(*) FROM t1}
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} {26}
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do_test wherelimit-2.5 {
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# limit 5, offset -2
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execsql {DELETE FROM t1 WHERE x=2 ORDER BY x LIMIT 5 OFFSET -2}
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execsql {SELECT count(*) FROM t1}
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} {24}
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do_test wherelimit-2.6 {
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# limit -5 (no limit), offset 2
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execsql {DELETE FROM t1 WHERE x=3 ORDER BY x LIMIT 2, -5}
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execsql {SELECT count(*) FROM t1}
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} {20}
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do_test wherelimit-2.7 {
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# limit 5, offset -2 (no offset)
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execsql {DELETE FROM t1 WHERE x=3 ORDER BY x LIMIT -2, 5}
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execsql {SELECT count(*) FROM t1}
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} {18}
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do_test wherelimit-2.8 {
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# limit -5 (no limit), offset -2 (no offset)
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execsql {DELETE FROM t1 WHERE x=4 ORDER BY x LIMIT -2, -5}
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execsql {SELECT count(*) FROM t1}
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} {12}
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create_test_data 6
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do_test wherelimit-2.9 {
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# limit 5, offset 2
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execsql {DELETE FROM t1 WHERE x=5 ORDER BY x LIMIT 2, 5}
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execsql {SELECT count(*) FROM t1}
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} {32}
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do_test wherelimit-2.10 {
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# limit 5, offset 5
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execsql {DELETE FROM t1 WHERE x=6 ORDER BY x LIMIT 5 OFFSET 5}
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execsql {SELECT count(*) FROM t1}
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} {31}
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do_test wherelimit-2.11 {
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# limit 50, offset 30
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execsql {DELETE FROM t1 WHERE x=1 ORDER BY x LIMIT 50 OFFSET 30}
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execsql {SELECT count(*) FROM t1}
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} {31}
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do_test wherelimit-2.12 {
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# limit 50, offset 30
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execsql {DELETE FROM t1 WHERE x=2 ORDER BY x LIMIT 30, 50}
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execsql {SELECT count(*) FROM t1}
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} {31}
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do_test wherelimit-2.13 {
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execsql {DELETE FROM t1 WHERE x=3 ORDER BY x LIMIT 50 OFFSET 50}
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execsql {SELECT count(*) FROM t1}
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} {31}
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create_test_data 6
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do_test wherelimit-3.0 {
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execsql {SELECT count(*) FROM t1}
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} {36}
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do_test wherelimit-3.1 {
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execsql {UPDATE t1 SET y=1 WHERE x=1}
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execsql {SELECT count(*) FROM t1 WHERE y=1}
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} {11}
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create_test_data 6
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do_test wherelimit-3.2 {
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execsql {UPDATE t1 SET y=1 WHERE x=1 LIMIT 5}
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execsql {SELECT count(*) FROM t1 WHERE y=1}
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} {10}
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do_test wherelimit-3.3 {
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# limit 5
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execsql {UPDATE t1 SET y=2 WHERE x=2 ORDER BY x LIMIT 5}
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execsql {SELECT count(*) FROM t1 WHERE y=2}
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} {9}
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create_test_data 6
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do_test wherelimit-3.4 {
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# limit 5, offset 2
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execsql {UPDATE t1 SET y=2 WHERE x=2 ORDER BY x LIMIT 5 OFFSET 2}
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execsql {SELECT count(*) FROM t1 WHERE y=1}
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} {6}
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do_test wherelimit-3.5 {
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# limit 5, offset -2
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execsql {UPDATE t1 SET y=2 WHERE x=2 ORDER BY x LIMIT 5 OFFSET -2}
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execsql {SELECT count(*) FROM t1 WHERE y=1}
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} {5}
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do_test wherelimit-3.6 {
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# limit -5 (no limit), offset 2
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execsql {UPDATE t1 SET y=3 WHERE x=3 ORDER BY x LIMIT 2, -5}
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execsql {SELECT count(*) FROM t1 WHERE y=3}
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} {8}
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do_test wherelimit-3.7 {
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# limit 5, offset -2 (no offset)
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execsql {UPDATE t1 SET y=3 WHERE x=3 ORDER BY x LIMIT -2, 5}
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execsql {SELECT count(*) FROM t1 WHERE y=3}
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} {10}
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do_test wherelimit-3.8 {
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# limit -5 (no limit), offset -2 (no offset)
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execsql {UPDATE t1 SET y=4 WHERE x=4 ORDER BY x LIMIT -2, -5}
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execsql {SELECT count(*) FROM t1 WHERE y=4}
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} {9}
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create_test_data 6
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do_test wherelimit-3.9 {
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# limit 5, offset 2
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execsql {UPDATE t1 SET y=4 WHERE x=5 ORDER BY x LIMIT 2, 5}
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execsql {SELECT count(*) FROM t1 WHERE y=4}
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} {9}
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do_test wherelimit-3.10 {
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# limit 5, offset 5
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execsql {UPDATE t1 SET y=4 WHERE x=6 ORDER BY x LIMIT 5 OFFSET 5}
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execsql {SELECT count(*) FROM t1 WHERE y=1}
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} {6}
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do_test wherelimit-3.11 {
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# limit 50, offset 30
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execsql {UPDATE t1 SET y=1 WHERE x=1 ORDER BY x LIMIT 50 OFFSET 30}
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execsql {SELECT count(*) FROM t1 WHERE y=1}
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} {6}
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do_test wherelimit-3.12 {
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# limit 50, offset 30
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execsql {UPDATE t1 SET y=1 WHERE x=2 ORDER BY x LIMIT 30, 50}
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execsql {SELECT count(*) FROM t1 WHERE y=1}
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} {6}
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do_test wherelimit-3.13 {
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execsql {UPDATE t1 SET y=1 WHERE x=3 ORDER BY x LIMIT 50 OFFSET 50}
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execsql {SELECT count(*) FROM t1 WHERE y=1}
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} {6}
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}
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finish_test
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