How can foreign key constraints be temporarily disabled using T-SQL?

Question

Are disabling and enabling foreign key constraints supported in SQL Server? Or is my only option to drop and then re-create

Answer 1

The SQL-92 standard allows for a constaint to be declared as DEFERRABLE so that it can be deferred (implicitly or explicitly) within the scope of a transaction. Sadly, SQL Server is still missing this SQL-92 functionality.

For me, changing a constraint to NOCHECK is akin to changing the database structure on the fly -- dropping constraints certainly is -- and something to be avoided (e.g. users require increased privileges).