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When I want to add the line
SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED
right after BEGIN clause of my function definition script in SQL SERVER 2008,
it says:
Invalid use of a side-effecting operator 'SET TRANSACTION ISOLATION LEVEL' within a function
How can I achive this functionality within a function definition?
You can’t. UDFs do not support set operations.
A function is always executing within the context of a transaction (implicitly or explicitly), and you can’t change the isolation level of a transaction once it has begun.