49 lines
1.2 KiB
MySQL
49 lines
1.2 KiB
MySQL
|
-- Copyright 2018 Tanel Poder. All rights reserved. More info at http://tanelpoder.com
|
||
|
|
-- Licensed under the Apache License, Version 2.0. See LICENSE.txt for terms & conditions.
|
||
|
|
|
||
|
|
-- test case from http://forums.oracle.com/forums/thread.jspa?threadID=2228426
|
||
|
|
--
|
||
|
|
-- When I choose a high_value > 100000 the grouping query runs < 1 sec.
|
||
|
|
-- With high_value = 100000: < 1 sec
|
||
|
|
-- With high_value = 90000: < 1 sec
|
||
|
|
-- With high_value = 80000: 3 sec
|
||
|
|
-- With high_value = 70000: 9 sec
|
||
|
|
-- With high_value = 60000: 17 sec
|
||
|
|
-- With high_value = 50000: 28 sec
|
||
|
|
-- With high_value = 40000: 34 sec
|
||
|
|
-- With high_value = 30000: 47 sec
|
||
|
|
-- With high_value = 20000: 61 sec
|
||
|
|
-- With high_value = 10000: 76 sec
|
||
|
|
-- With high_value = 1: 102 sec
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
set verify off
|
||
|
|
undefine high_value
|
||
|
|
|
||
|
|
drop table test_interval_p1_&&high_value;
|
||
|
|
|
||
|
|
create table test_interval_p1_&high_value
|
||
|
|
partition by range (id)
|
||
|
|
interval (1)
|
||
|
|
(partition test_p1 values less than (&high_value))
|
||
|
|
as
|
||
|
|
select 100000 id
|
||
|
|
, t.*
|
||
|
|
from all_objects t
|
||
|
|
where 1 = 0;
|
||
|
|
|
||
|
|
insert into test_interval_p1_&high_value
|
||
|
|
select 100000 id
|
||
|
|
, t.*
|
||
|
|
from all_objects t;
|
||
|
|
|
||
|
|
commit;
|
||
|
|
|
||
|
|
-- pause
|
||
|
|
|
||
|
|
select id, count(*)
|
||
|
|
from test_interval_p1_&high_value
|
||
|
|
group by id;
|
||
|
|
|