DROP all foreign keys in MYSQL database

Question

Foreign keys are causing me too many problems modifying an database structure to meet new requirements - I want to modify primary keys but it seems I can\'t when foreign key

Answer 1

Run

SELECT concat('ALTER TABLE ', TABLE_NAME, ' DROP FOREIGN KEY ', CONSTRAINT_NAME, ';') 
FROM information_schema.key_column_usage 
WHERE CONSTRAINT_SCHEMA = 'db_name' 
AND referenced_table_name IS NOT NULL;

and run the output.