MySQL Forums
Forum List  »  Performance

Advanced Search
New Topic

Re: Removing NOT NULL constraint takes a long time. Why?
Posted by: Ben Dowling
Date: November 03, 2009 09:58AM

Hi Rick,

The manual says changes can be made immediately if the change is only to the table's metadata. I had assumed that the NOT NULL constraint would be part of the metadata, so I guess my question should really have been "Why can't the NOT NULL constraint for a column stored as part of a table's metadata?"

Thanks, Ben

Navigate: Previous Message• Next Message
Options: Reply• Quote


Subject
Views
Written By
Posted
Removing NOT NULL constraint takes a long time. Why?
10258
Ben Dowling
October 28, 2009 08:54AM
Re: Removing NOT NULL constraint takes a long time. Why?
2956
Rick James
October 29, 2009 09:47PM
Re: Removing NOT NULL constraint takes a long time. Why?
2750
Ben Dowling
November 03, 2009 09:58AM
Re: Removing NOT NULL constraint takes a long time. Why?
2461
Rick James
November 03, 2009 08:48PM


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.