4
create table t1 (a int not null auto_increment,b int, primary key (a)) engine=myisam auto_increment=3;
4
create TEMPORARY table t1 (a int not null auto_increment,b int, primary key (a)) engine=myisam auto_increment=3;
5
5
insert into t1 values (1,1),(NULL,3),(NULL,4);
6
6
delete from t1 where a=4;
7
7
insert into t1 values (NULL,5),(NULL,6);