create table t1(c1 int not null, c2 double not null, c3 char(255) not null) engine=archive;
insert t1 select seq, seq+0.7, concat('row with c1 = ', seq) from seq_1_to_10;
explain partitions select c1,c3 from t1 order by c2;
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	NULL	ALL	NULL	NULL	NULL	NULL	10	Using filesort
set max_length_for_sort_data = 4;
explain partitions select c1,c3 from t1 order by c2;
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	NULL	ALL	NULL	NULL	NULL	NULL	10	Using temporary; Using filesort
flush status;
select c1,c3 from t1 order by c2;
c1	c3
1	row with c1 = 1
2	row with c1 = 2
3	row with c1 = 3
4	row with c1 = 4
5	row with c1 = 5
6	row with c1 = 6
7	row with c1 = 7
8	row with c1 = 8
9	row with c1 = 9
10	row with c1 = 10
set max_length_for_sort_data = default;
show status where variable_name like '%tmp%' and value != 0;
Variable_name	Value
Created_tmp_tables	1
Handler_tmp_write	10
Rows_tmp_read	20
alter table t1 partition by hash (c1) partitions 3;
explain partitions select c1,c3 from t1 order by c2;
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	p0,p1,p2	ALL	NULL	NULL	NULL	NULL	10	Using filesort
set max_length_for_sort_data = 4;
explain partitions select c1,c3 from t1 order by c2;
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	p0,p1,p2	ALL	NULL	NULL	NULL	NULL	10	Using temporary; Using filesort
flush status;
select c1,c3 from t1 order by c2;
c1	c3
1	row with c1 = 1
2	row with c1 = 2
3	row with c1 = 3
4	row with c1 = 4
5	row with c1 = 5
6	row with c1 = 6
7	row with c1 = 7
8	row with c1 = 8
9	row with c1 = 9
10	row with c1 = 10
set max_length_for_sort_data = default;
show status where variable_name like '%tmp%' and value != 0;
Variable_name	Value
Created_tmp_tables	1
Handler_tmp_write	10
Rows_tmp_read	20
drop table t1;