1553 Cannot drop index 'posts_user_id_foreign': needed in a foreign key constraint

Updated at 26-Jul-2021, By samar

Error #1553 - Cannot drop index 'posts_user_id_foreign': needed in a foreign key constraint occurs when you try to delete table column structure in MySQL with a foreign key user_id.

  • Drop 'posts_user_id_foreign' foreign key, index in MySQL

    //First drop foreign key 'posts_user_id_foreign' from posts table
    ALTER TABLE posts DROP FOREIGN KEY posts_user_id_foreign;
    
    //Drop index posts_user_id_foreign from users table
    ALTER TABLE posts DROP INDEX posts_user_id_foreign;
    

    You can delete foreign keys and indexes using drop query in MySQL.

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