Question

I have a simple table that contains 3 rows: a short text, its own ID and ID of another object.

I want to lose the association with that another object. I want to set its ID to 0 (such object does not exist). I can not use NULL because of other reasons.

Please help me to set table or row in MySQL Workbench to allow performing such operation.

Answer 1

You can’t “force” a value that violates a foreign key. That’s the whole point of foreign keys.

You’ll have to either

• Fix whatever doesn’t like NULL values and set the value to NULL (that’s what it’s for, and this is the correct way),
• Create a dummy object with ID 0 so the reference works, or
• Remove the foreign key altogether.