SQL Server - storing SELECT statement into a variable in a Stored Procedure

Question

In my Stored Procedure, I am trying to store the result of a SELECT statement inside a variable. This is what I have so far:

DECLARE @process_pk uniqueidentifier
INSERT INTO @process_pk
    SELECT process_pk 
    FROM dbo.Process 
    WHERE process_id = @process_id

In the above, I'm trying to store the result of the SELECT statement into my variable @process_pk, to be used sometime later in the latter part of my stored procedure. But it doesn't seem to be the correct syntax.

I would like to ask what is the correct way to store SELECT statement results inside a Stored Procedure variable so that it can be used anytime within the stored procedure.

Answer 1

You should use SET

SET @process_PK = (SELECT process_pk 
    FROM dbo.Process 
    WHERE process_id = @process_id)