drop table if exists t1,t2;
create table t1 (i int, j int);
insert into t1 values (1,2), (3,4), (5,6), (7,8);
select count(*) from t1 procedure analyse();
Field_name	Min_value	Max_value	Min_length	Max_length	Empties_or_zeros	Nulls	Avg_value_or_avg_length	Std	Optimal_fieldtype
count(*)	4	4	1	1	0	0	4.0000	0.0000	ENUM('4') NOT NULL
select * from t1 procedure analyse();
Field_name	Min_value	Max_value	Min_length	Max_length	Empties_or_zeros	Nulls	Avg_value_or_avg_length	Std	Optimal_fieldtype
t1.i	1	7	1	1	0	0	4.0000	2.2361	ENUM('1','3','5','7') NOT NULL
t1.j	2	8	1	1	0	0	5.0000	2.2361	ENUM('2','4','6','8') NOT NULL
create table t2 select * from t1 procedure analyse();
select * from t2;
Field_name	Min_value	Max_value	Min_length	Max_length	Empties_or_zeros	Nulls	Avg_value_or_avg_length	Std	Optimal_fieldtype
t1.i	1	7	1	1	0	0	4.0000	2.2361	ENUM('1','3','5','7') NOT NULL
t1.j	2	8	1	1	0	0	5.0000	2.2361	ENUM('2','4','6','8') NOT NULL
drop table t1,t2;
EXPLAIN SELECT 1 FROM (SELECT 1) a PROCEDURE ANALYSE();
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	<derived2>	system	NULL	NULL	NULL	NULL	1	
2	DERIVED	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used