Removing a primary key column in SQL Server 2008

Question

I have a table named master_employee with a column empid as the primary key, and it has 12 rows in it. This empid has been mapped as a foreign key to another table named dep_child . I want to delete the 12 records in the master_employee table but I was unable to do it.

Answer 1

You were unable to do the deletes from master_employees , as there is a referential integrity with dep_child . You would need to either disable the constraint or delete the records from dep_child , before being able to delete records from master_employees

Answer 2

Add this constraints to your master_employee table

ALTER TABLE "master_employee"

ADD CONSTRAINT "fk_emp11"

FOREIGN KEY ("emp_id")

REFERENCES "dep_child" ("emp_id")

ON DELETE CASCADE;