set default_storage_engine='tokudb';
drop table if exists tt;
create table tt (a int, b int, unique key(a));
insert into tt values (1,0),(2,1),(3,2),(4,3);
show indexes from tt;
Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment	Index_comment
tt	0	a	1	a	A	4	NULL	NULL	YES	BTREE		
analyze table tt;
Table	Op	Msg_type	Msg_text
test.tt	analyze	status	OK
show indexes from tt;
Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment	Index_comment
tt	0	a	1	a	A	4	NULL	NULL	YES	BTREE		
flush tables;
show indexes from tt;
Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment	Index_comment
tt	0	a	1	a	A	4	NULL	NULL	YES	BTREE		
drop table tt;