MySQL Creating tables with Foreign Keys giving errno: 150

Question

I am trying to create a table in MySQL with two foreign keys, which reference the primary keys in 2 other tables, but I am getting an errno: 150 error and it will not create

Answer 1

execute below line before creating table : SET FOREIGN_KEY_CHECKS = 0;

FOREIGN_KEY_CHECKS option specifies whether or not to check foreign key constraints for InnoDB tables.

-- Specify to check foreign key constraints (this is the default)

SET FOREIGN_KEY_CHECKS = 1;

 

-- Do not check foreign key constraints

SET FOREIGN_KEY_CHECKS = 0;

When to Use : Temporarily disabling referential constraints (set FOREIGN_KEY_CHECKS to 0) is useful when you need to re-create the tables and load data in any parent-child order