DROP TABLE IF EXISTS t1,t2,t3,t4,t5,t6;
create table t1 (id int primary key, value int, value2 varchar(200), index(value)) engine=xengine;
create table t2 (id int primary key, value int, value2 varchar(200), index(value)) engine=xengine;
create table t3 (id int primary key, value int, value2 varchar(200), index(value)) engine=xengine;
create table t4 (id int, value int, value2 varchar(200), primary key (id) comment 'cf_i', index(value) comment 'cf_i') engine=xengine;
create table t5 (id int, value int, value2 varchar(200), primary key (id) comment 'cf_i', index(value) comment 'cf_i') engine=xengine;
create table t6 (id int, value int, value2 varchar(200), primary key (id) comment 'cf_i', index(value) comment 'cf_i') engine=xengine;
select count(*) from t1;
count(*)
10000
select count(*) from t2;
count(*)
10000
select count(*) from t3;
count(*)
10000
select count(*) from t4;
count(*)
10000
select count(*) from t5;
count(*)
10000
select count(*) from t6;
count(*)
10000
delete from t1 where id <= 9900;
delete from t2 where id <= 9900;
delete from t3 where id <= 9900;
delete from t4 where id <= 9900;
delete from t5 where id <= 9900;
delete from t6 where id <= 9900;
optimize table t2;
Table	Op	Msg_type	Msg_text
test.t2	optimize	status	OK
optimize table t5;
Table	Op	Msg_type	Msg_text
test.t5	optimize	status	OK
DROP TABLE t1;
DROP TABLE t2;
DROP TABLE t3;
DROP TABLE t4;
DROP TABLE t5;
DROP TABLE t6;