MySQL :: Re: Dumping enormous MYISAM table with BLOB based on WHERE clause

New Topic

Re: Dumping enormous MYISAM table with BLOB based on WHERE clause

Posted by: Jonathan Stephens
Date: January 29, 2015 06:27AM

Why is it necessary to drop/re-create/reload the table? You're not interested in saving any of the old data, right? So why not just run something like this in the mysql client?

DELETE FROM upload_table WHERE serve_date < "2015-01-01";

OPTIMIZE TABLE upload_table;

OPTIMIZE TABLE should recover the space from the deleted rows and rebuild any indexes that need it.

Jon Stephens
MySQL Documentation Team @ Oracle

MySQL Dev Zone
MySQL Server Documentation
Oracle

Navigate: Previous Message• Next Message

Options: Reply• Quote

Subject

Views

Written By

Posted

Dumping enormous MYISAM table with BLOB based on WHERE clause

3754

Ifechukwukwu Okobi

January 29, 2015 12:40AM

Re: Dumping enormous MYISAM table with BLOB based on WHERE clause

2332

Jonathan Stephens

January 29, 2015 06:27AM

Re: Dumping enormous MYISAM table with BLOB based on WHERE clause

2121

Ifechukwukwu Okobi

January 29, 2015 10:34AM

Re: Dumping enormous MYISAM table with BLOB based on WHERE clause

2268

Rick James

January 29, 2015 04:53PM

Re: Dumping enormous MYISAM table with BLOB based on WHERE clause

2315

Rick James

January 29, 2015 04:59PM

Re: Dumping enormous MYISAM table with BLOB based on WHERE clause

2385

Ifechukwukwu Okobi

January 30, 2015 05:49AM

Re: Dumping enormous MYISAM table with BLOB based on WHERE clause

2404

Rick James

January 30, 2015 12:01PM

Re: Dumping enormous MYISAM table with BLOB based on WHERE clause

2079

Ifechukwukwu Okobi

January 30, 2015 05:46AM

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.