9
create temporary table t1 (a int not null auto_increment,b int, primary key (a)) engine=heap auto_increment=3;
9
create temporary table t1 (a int not null auto_increment,b int, primary key (a)) engine=MEMORY auto_increment=3;
10
10
insert into t1 values (1,1),(NULL,3),(NULL,4);
11
11
delete from t1 where a=4;
12
12
insert into t1 values (NULL,5),(NULL,6);