MySQL Forums
Forum List  »  Performance

Re: Removing NOT NULL constraint takes a long time. Why?
Posted by: Rick James
Date: October 29, 2009 09:47PM

Any ALTER rebuilds the table, and rebuilds the indexes. Alas, it will take a long time for a table that big.

SHOW VARIABLES LIKE "%buffer%";
SHOW VARIABLES LIKE "%tmp%";

Options: ReplyQuote


Subject
Views
Written By
Posted
Re: Removing NOT NULL constraint takes a long time. Why?
2779
October 29, 2009 09:47PM


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.