sql server - How to update primary key

Question

Here is my problem - I have 2 tables:

1. WORKER, with columns |ID|OTHER_STAF| , where ID is primary key
2. FIRM, with columns |FPK|ID|SOMETHING_ELSE| , where combination FPK and ID make primary key, and also ID is a foreign key referenced to WORKER.ID (not null, and must have same value as in WORKER).

I want to make stored procedure UPDATE_ID_WORKER, where I would like to change the value of specific ID in WORKER, and also in all instances of specific value of ID in FIRM.

Answer 1

You shouldn't really do this but insert in a new record instead and update it that way.
But, if you really need to, you can do the following:

• Disable enforcing FK constraints temporarily (e.g. ALTER TABLE foo WITH NOCHECK CONSTRAINT ALL)
• Then update your PK
• Then update your FKs to match the PK change
• Finally enable back enforcing FK constraints