?
Regards,
David.
-Message d'origine-
De : phark...@gmail.com [mailto:phark...@gmail.com] De la part de Perrin
Harkins
Envoyé : jeudi 15 avril 2010 02:36
À : Dan Nelson
Cc : David Florella; mysql@lists.mysql.com
Objet : Re: Make delete requests without impact on a database
On Wed, Apr
Hi,
I am using MySQL version 4.1.12-log. All the databases on it are using
MyISAM database engine.
Every day, I delete almost 9 rows on a table of 3 153 916 rows.
To delete the rows, I use a request like this : DELETE QUICK FROM [table]
WHERE [column] '2010-04-13 00:00:00'
In the last episode (Apr 14), David Florella said:
I am using MySQL version 4.1.12-log. All the databases on it are using
MyISAM database engine.
Every day, I delete almost 9 rows on a table of 3 153 916 rows.
To delete the rows, I use a request like this : DELETE QUICK FROM [table]
It looks like you only want to keep the current data, perhaps the current
day's worth, and delete the old data.
I would store the data in separate MySIAM tables, each table would
represent a date, like D20100413 and D20100414. Your program will decide
which table to insert the data into by
Been there, done that. It's a maintenance nightmare.
Another idea: Have a separate deleted table with the IDs of the rows
that you consider deleted. Re-write your queries to do a
left-join-not-in-the-other-table agains the delete table. Then, either
wait for a maintenance window to delete the
At 01:20 PM 4/14/2010, Carsten Pedersen wrote:
Been there, done that. It's a maintenance nightmare.
Why is it a maintenance nightmare? I've been using this technique for a
couple of years to store large amounts of data and it has been working just
fine. I have each table representing one
mos skrev:
At 01:20 PM 4/14/2010, Carsten Pedersen wrote:
Been there, done that. It's a maintenance nightmare.
Why is it a maintenance nightmare? I've been using this technique for a
couple of years to store large amounts of data and it has been working
just fine.
In a previous reply,
-Original Message-
From: Dan Nelson [mailto:dnel...@allantgroup.com]
Sent: Wednesday, April 14, 2010 7:23 AM
To: David Florella
Cc: mysql@lists.mysql.com
Subject: Re: Make delete requests without impact on a database
In the last episode (Apr 14), David Florella said:
I am using
On Wed, Apr 14, 2010 at 10:22 AM, Dan Nelson dnel...@allantgroup.com wrote:
Switch to InnoDB :)
Seconded. No need to complicate your life with MyISAM workarounds
when InnoDB solves this problem already.
- Perrin
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