zwwcn

Just another WordPress.com site

Cannot delete or update a parent row: foreign key constraint fails

I had problem to delete a record, got the “foreign key constraint fails” error. We could temporately disable the foreign key check on MySQL, delete the wrong data, then change it back.

SET FOREIGN_KEY_CHECKS=0; — to disable foreign key check
SET FOREIGN_KEY_CHECKS=1; — to re-enable foreign key check

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: