Receiving error “Select statements included within a function cannot return data to a client”

Question

Receiving an error when attempting to use a Select statement in a function. The error states:

Msg 444, Level 16, State 2, Procedure JDE_GetWhereClause

Answer 1

Found this MSDN article helpful and it resolved my issue:

RETURN (SELECT GETDATE());

Returning values directly from a select statement, avoiding variable.

Answer 2

Try playing with something like...

CREATE FUNCTION [dbo].[JDE_GetWhereClause_test]
(
@tablename as varchar
)
RETURNS varchar(max)
AS
BEGIN
  -- Declare the return variable here
  Declare @ResultVar as varchar(max)

  -- Add the T-SQL statements to compute the return value here

  set @ResultVar = (select STUFF((SELECT ',', fsuser as [text()]
                    FROM dbo.JDE_ExRowSecurity 
                    FOR XML PATH ('')), 1, 1, '') as blah)

  -- Return the result of the function
  RETURN @ResultVar
END

select 'Answer is: '+[dbo].[JDE_GetWhereClause_test]('whatever')