benedict-w/remove_orphans.sql

Created April 3, 2013 09:20

Star (0) You must be signed in to star a gist
Fork (0) You must be signed in to fork a gist

Select an option

Learn more about clone URLs
Clone this repository at <script src="https://gist.github.com/benedict-w/5299690.js"></script>
Save benedict-w/5299690 to your computer and use it in GitHub Desktop.

Download ZIP

mysql remove orphans

Raw

remove_orphans.sql

	DELETE FROM `_table_1`
	WHERE `_key` NOT IN (SELECT `key` FROM `_table_2`)

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment