Planet MySQL Planet MySQL: Meta Deutsch Español Français Italiano 日本語 Русский Português 中文
Showing entries 1 to 1

Displaying posts with tag: data archiving (reset)

How to write a lazy UNION in MySQL
+0 Vote Up -0Vote Down

The other day I was explaining options to someone who wanted to know about archiving data in MySQL. “So,” he said, “I might have to code my app to look for the data in two places?” The disadvantage of this is that his app might be more complex. Another disadvantage is that it might take two queries — if you look for a user in the usual location and it’s not there, you have to look for it elsewhere.

One way to deal with this, as long as the archived data is on the same server, is a UNION.

select user_id from user where …
  [Read more...]
Showing entries 1 to 1

Planet MySQL © 1995, 2016, Oracle Corporation and/or its affiliates   Legal Policies | Your Privacy Rights | Terms of Use

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.