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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
Orlando, Florida, USA

MySQL Dev Zone
MySQL Server Documentation
Oracle

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