1CREATE TABLE t1 ( a INT NOT NULL, b INT NOT NULL) ;
2INSERT INTO t1 SELECT seq,seq FROM seq_1_to_2097152;
3ALTER TABLE t1 ADD INDEX i1(a);
4DELETE FROM t1 WHERE a > 2000000;
5CREATE TABLE t2 LIKE t1;
6INSERT INTO t2 SELECT * FROM t1;
7SELECT 't2 rows before small delete', COUNT(*) FROM t1;
8t2 rows before small delete	COUNT(*)
9t2 rows before small delete	2000000
10DELETE t1,t2 FROM t1,t2 WHERE t1.b=t2.a AND t1.a < 2;
11SELECT 't2 rows after small delete', COUNT(*) FROM t2;
12t2 rows after small delete	COUNT(*)
13t2 rows after small delete	1999999
14SELECT 't1 rows after small delete', COUNT(*) FROM t1;
15t1 rows after small delete	COUNT(*)
16t1 rows after small delete	1999999
17DELETE t1,t2 FROM t1,t2 WHERE t1.b=t2.a AND t1.a < 100*1000;
18SELECT 't2 rows after big delete', COUNT(*) FROM t2;
19t2 rows after big delete	COUNT(*)
20t2 rows after big delete	1900001
21SELECT 't1 rows after big delete', COUNT(*) FROM t1;
22t1 rows after big delete	COUNT(*)
23t1 rows after big delete	1900001
24DROP TABLE t1,t2;
25