To disable a foreign key constraint for insert and update statements. in object explorer, expand the table with the constraint and then expand the keys folder. right-click the constraint and select modify. in the grid under table designer, click enforce foreign key constraint and select no from the drop-down menu. click close. using transact-sql. A foreign key constraint on a stored generated column cannot use on update cascade, on delete set null, on update set null, on delete set default, or on update set default. a foreign key constraint cannot reference a virtual generated column.. A table with a foreign key reference to itself is still limited to 253 foreign key references. greater than 253 foreign key references are not currently available for columnstore indexes, memory-optimized tables, or stretch database. foreign key constraints are not enforced on temporary tables..
How to update table with foreign key. ask question. up vote 2 down vote favorite. my story is that i do so much updates on the staging database, faculty table, change lots of faculty comment and name without changing class table. i want to copy the staging faculty table to production. alter class table and restore foreign key constraint;. However, if you disable the foreign key checks, you can load data in any orders. another example is that, unless you disable the foreign key checks, you cannot drop a table that is referenced by a foreign key constraint. when you drop a table, any constraints that you defined for the table are also removed.. Alter table fk add constraint fk_p_id foreign key (p_id) references pk (p_id) on update cascade and then update the rows of pk , which will automatically update fk too. update a set a.p_id= a.p_id + 10 from pk a inner join fk b on a.p_id = b.p_id.
