# 2005 August 24

#

# 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 script is a test of the DELETE command where a

# large number of rows are deleted.

#

set testdir [file dirname $argv0]

source $testdir/tester.tcl

# Create a table that contains a large number of rows.

#

do_test delete3-1.1 {

  execsql {

    CREATE TABLE t1(x integer primary key);

    BEGIN;

    INSERT INTO t1 VALUES(1);

    INSERT INTO t1 VALUES(2);

    INSERT INTO t1 SELECT x+2 FROM t1;

    INSERT INTO t1 SELECT x+4 FROM t1;

    INSERT INTO t1 SELECT x+8 FROM t1;

    INSERT INTO t1 SELECT x+16 FROM t1;

    INSERT INTO t1 SELECT x+32 FROM t1;

    INSERT INTO t1 SELECT x+64 FROM t1;

    INSERT INTO t1 SELECT x+128 FROM t1;

    INSERT INTO t1 SELECT x+256 FROM t1;

    INSERT INTO t1 SELECT x+512 FROM t1;

    INSERT INTO t1 SELECT x+1024 FROM t1;

    INSERT INTO t1 SELECT x+2048 FROM t1;

    INSERT INTO t1 SELECT x+4096 FROM t1;

    INSERT INTO t1 SELECT x+8192 FROM t1;

    INSERT INTO t1 SELECT x+16384 FROM t1;

    INSERT INTO t1 SELECT x+32768 FROM t1;

    INSERT INTO t1 SELECT x+65536 FROM t1;

    INSERT INTO t1 SELECT x+131072 FROM t1;

    INSERT INTO t1 SELECT x+262144 FROM t1;

    COMMIT;

    SELECT count(*) FROM t1;	

  }

} {524288}

do_test delete3-1.2 {

  execsql {

    DELETE FROM t1 WHERE x%2==0;

    SELECT count(*) FROM t1;

  }

} {262144}

integrity_check delete3-1.3

finish_test