How to get past the following "Cannot change column 'xxx': used in a foreign key constraint"

This question is in reference to Atlassian Documentation: MySQL Collation Repair: Table Level Changes

Example:

ALTER TABLE `CONTENT` MODIFY `CREATOR` varchar(255) CHARACTER SET UTF8 COLLATE utf8_bin;

ERROR 1832 (HY000): Cannot change column 'CREATOR': used in a foreign key constraint 'FK_CONTENT_CREATOR'

 

 

2 answers

1 accepted

2 votes
Accepted answer

You can disable the constraints checks, run the ALTER statement and then enable the constraint checker again:

SET foreign_key_checks = 0;
ALTER TABLE `CONTENT` MODIFY `CREATOR` varchar(255) CHARACTER SET UTF8 COLLATE utf8_bin;
SET foreign_key_checks = 1;

See if it helps...

Thank you Guilherme.  Got my service up an running again.

You're welcome, buddy smile

thank you guy.

0 votes
黄兵 I'm New Here Aug 14, 2018

Thank you for your reply and helped me solve the problem.

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