Drop foreign id column (user_id) in MySQL

Created at 26-Jul-2021, By samar

Drop foreign id column (user_id) in MySQL

We’ll attempt to use programming in this lesson to solve the "Drop foreign id column (user_id) in MySQL" puzzle.

You can drop the foreign id column user_id in MySQL. You have to first delete the foreign key and index before deleting the foreign id column else it will give error #1553 - Cannot drop index 'posts_user_id_foreign': needed in a foreign key constraint.
  • Drop column (foreign Id) user_id from posts table

    ALTER TABLE `posts` DROP COLUMN `user_id`;
    

    You can drop column user_id from posts table using drop column method in MySQL. If you are getting error #1553 Cannot drop index 'posts_user_id_foreign': needed in a foreign key constraint then you have to first delete the foreign key and indexes.

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