I have 2 tables A and B
- a_id FK references A(id)
I used the Magento’s upgrade script to add both tables, everything was created correctly, however when i tried to setting a_id to null via Magento code it throws a FK exception:
Something went wrong while saving the B.SQLSTATE: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails
However when i tried updating the column via MySQL directly i have no problems:
UPDATE B SET a_id = null WHERE id = 1;
So it is Magento’s
MagentoFrameworkForeignKeyStrategyRestrict that is not allowing this operation. How can i avoid this restriction then since MySQL didn’t throw any errors.