SELECT
@QTRSTRTDATE = DATEADD(m, DATEDIFF(m, 0, GETDATE()), 0),
@QTRENDDATE = DATEADD(m,DATEDIFF(m,-1, GETDATE()),-1)
EXEC @return_value = [dbo].[test] @QTRSTRTDATE, @QTRENDDATE
For fast, accurate and documented assistance in answering your questions, please read this article.
Understanding and using APPLY, (I) and (II) Paul White
Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden