sl@0: # 2005 August 24
sl@0: #
sl@0: # The author disclaims copyright to this source code.  In place of
sl@0: # a legal notice, here is a blessing:
sl@0: #
sl@0: #    May you do good and not evil.
sl@0: #    May you find forgiveness for yourself and forgive others.
sl@0: #    May you share freely, never taking more than you give.
sl@0: #
sl@0: #***********************************************************************
sl@0: # This file implements regression tests for SQLite library.  The
sl@0: # focus of this script is a test of the DELETE command where a
sl@0: # large number of rows are deleted.
sl@0: #
sl@0: 
sl@0: set testdir [file dirname $argv0]
sl@0: source $testdir/tester.tcl
sl@0: 
sl@0: # Create a table that contains a large number of rows.
sl@0: #
sl@0: do_test delete3-1.1 {
sl@0:   execsql {
sl@0:     CREATE TABLE t1(x integer primary key);
sl@0:     BEGIN;
sl@0:     INSERT INTO t1 VALUES(1);
sl@0:     INSERT INTO t1 VALUES(2);
sl@0:     INSERT INTO t1 SELECT x+2 FROM t1;
sl@0:     INSERT INTO t1 SELECT x+4 FROM t1;
sl@0:     INSERT INTO t1 SELECT x+8 FROM t1;
sl@0:     INSERT INTO t1 SELECT x+16 FROM t1;
sl@0:     INSERT INTO t1 SELECT x+32 FROM t1;
sl@0:     INSERT INTO t1 SELECT x+64 FROM t1;
sl@0:     INSERT INTO t1 SELECT x+128 FROM t1;
sl@0:     INSERT INTO t1 SELECT x+256 FROM t1;
sl@0:     INSERT INTO t1 SELECT x+512 FROM t1;
sl@0:     INSERT INTO t1 SELECT x+1024 FROM t1;
sl@0:     INSERT INTO t1 SELECT x+2048 FROM t1;
sl@0:     INSERT INTO t1 SELECT x+4096 FROM t1;
sl@0:     INSERT INTO t1 SELECT x+8192 FROM t1;
sl@0:     INSERT INTO t1 SELECT x+16384 FROM t1;
sl@0:     INSERT INTO t1 SELECT x+32768 FROM t1;
sl@0:     INSERT INTO t1 SELECT x+65536 FROM t1;
sl@0:     INSERT INTO t1 SELECT x+131072 FROM t1;
sl@0:     INSERT INTO t1 SELECT x+262144 FROM t1;
sl@0:     COMMIT;
sl@0:     SELECT count(*) FROM t1;	
sl@0:   }
sl@0: } {524288}
sl@0: do_test delete3-1.2 {
sl@0:   execsql {
sl@0:     DELETE FROM t1 WHERE x%2==0;
sl@0:     SELECT count(*) FROM t1;
sl@0:   }
sl@0: } {262144}
sl@0: integrity_check delete3-1.3
sl@0: 
sl@0: finish_test