Question

Is it possible to return or output a @tableVariable in SQL Server?
For example for the following stored procedure, how do I return the @TSV table variable?

ALTER PROCEDURE MyStoredProdecure
    @Parameter1 INT,
    @Parameter2 INT
AS
   BEGIN

   DECLARE @TSV TABLE
   (
      Transition_Set_Variable_ID INT,
      Passed BIT
   )

   INSERT INTO @TSV
   { some data }

END

Answer 1

You cannot do it directly. Table variables are valid for READONLY input.

If you have no other data being returned from the stored procedure, you can select from the @TSV at the end and have the caller capture the output, e.g.

ALTER PROCEDURE MyStoredProdecure
    @Parameter1 INT,
    @Parameter2 INT
AS
   BEGIN

   DECLARE @TSV TABLE
   (
      Transition_Set_Variable_ID INT,
      Passed BIT
   )

   INSERT INTO @TSV
   { some data }

   SELECT * FROM @TSV
END

Caller

DECLARE @outerTSV TABLE
(
   Transition_Set_Variable_ID INT,
   Passed BIT
);
insert into @outerTSV
exec MyStoredProdecure 1, 2;

Alternatively, if the SP is really as simple as you showed, turn it into a table valued function instead.