drop table if exists t1,t2,t3;
create table T1 (id int primary key, Word varchar(40) not null, Index(Word));
INSERT INTO T1 VALUES (1, 'a'), (2, 'b'), (3, 'c');
SELECT * FROM t1;
id	Word
1	a
2	b
3	c
RENAME TABLE T1 TO T2;
ALTER TABLE T2 ADD new_col int not null;
ALTER TABLE T2 RENAME T3;
show tables like 't_';
Tables_in_test (t_)
t3
drop table t3;