2
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
5
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
7
create table t1 (a int not null auto_increment primary key, b int, key(b));
9
INSERT INTO t1 (a) VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9),(10);
10
INSERT INTO t1 (a) SELECT null FROM t1;
11
INSERT INTO t1 (a) SELECT null FROM t1;
12
INSERT INTO t1 (a) SELECT null FROM t1;
13
INSERT INTO t1 (a) SELECT null FROM t1;
14
INSERT INTO t1 (a) SELECT null FROM t1;
15
INSERT INTO t1 (a) SELECT null FROM t1;
16
INSERT INTO t1 (a) SELECT null FROM t1;
17
INSERT INTO t1 (a) SELECT null FROM t1;
18
INSERT INTO t1 (a) SELECT null FROM t1;
19
INSERT INTO t1 (a) SELECT null FROM t1;
20
INSERT INTO t1 (a) SELECT null FROM t1;
21
INSERT INTO t1 (a) SELECT null FROM t1;
22
INSERT INTO t1 (a) SELECT null FROM t1;