Skip navigation links

MySQL Forums :: Performance :: Long execution time despite LIMIT 3


Advanced Search

Re: Long execution time despite LIMIT 3
Posted by: Rick James ()
Date: June 20, 2011 06:33PM

Something unobvious is going on, please provide
* SHOW CREATE TABLE tbl\G -- engine, indexes
* SHOW TABLE STATUS LIKE 'tbl'\G -- sizes
* EXPLAIN SELECT ...\G -- clues of inefficiencies
* SHOW VARIABLES LIKE '%buffer%'; -- cache size
and surround them with [ code ] and [ / code ]

Also, please do
SELECT COUNT(*) FROM table WHERE thread='foo';

Options: ReplyQuote


Subject Views Written By Posted
Long execution time despite LIMIT 3 1083 Joachim Berger 06/19/2011 12:47PM
Re: Long execution time despite LIMIT 3 469 Joachim Berger 06/19/2011 12:54PM
Re: Long execution time despite LIMIT 3 445 Rick James 06/20/2011 06:33PM
Re: Long execution time despite LIMIT 3 433 Joachim Berger 06/20/2011 11:44PM
Re: Long execution time despite LIMIT 3 453 Joachim Berger 06/21/2011 02:06AM
Re: Long execution time despite LIMIT 3 455 Rick James 06/21/2011 07:23AM
Re: Long execution time despite LIMIT 3 404 Joachim Berger 06/21/2011 07:28AM
Re: Long execution time despite LIMIT 3 486 Joachim Berger 06/21/2011 10:33AM
Re: Long execution time despite LIMIT 3 533 Rick James 06/21/2011 10:08PM
Re: Long execution time despite LIMIT 3 613 Joachim Berger 06/22/2011 12:33AM
Re: Long execution time despite LIMIT 3 485 Rick James 06/22/2011 07:26PM
Re: Long execution time despite LIMIT 3 436 Joachim Berger 06/22/2011 11:45PM
Re: Long execution time despite LIMIT 3 395 Rick James 06/23/2011 08:53AM
Re: Long execution time despite LIMIT 3 510 Joachim Berger 06/24/2011 02:51AM


Sorry, you can't reply to this topic. It has been closed.

Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and does not necessarily represent the opinion of Oracle or any other party.