[SQL] 不知道是什么存储过程

CREATE PROCEDURE dt_DXS_STAFF_ACTIVE 

    @STAFFSTATUS INT,
    @STAFFNUM INT,
    @STARTNO INT,
    @@TOTALCOUNT INT OUTPUT,
    @@REALNUM INT OUTPUT AS
DECLARE @PRERECCOUNT VARCHAR(10)
DECLARE @CURRECCOUNT VARCHAR(10)
SELECT @@TOTALCOUNT=COUNT(*) FROM Table1
IF @@TOTALCOUNT>(@STARTNO+1)*@STAFFNUM
   SET @@REALNUM=@STAFFNUM
ELSE 
   SET @@REALNUM=@@TOTALCOUNT-@STARTNO*@STAFFNUM

SET @CURRECCOUNT=CAST( @STARTNO * @STAFFNUM + @@REALNUM AS VARCHAR( 10 ) )
IF @STARTNO = 0
     EXEC( 'SELECT TOP ' + @CURRECCOUNT + ' ID,NAME,Sex,Address,Salary FROM Table1 WHERE STATUS='+@STAFFSTATUS+' ORDER BY ID ASC' )
ELSE
   BEGIN
         SET @PRERECCOUNT= CAST( @STARTNO * @STAFFNUM AS VARCHAR( 10 ) )
         EXEC( 'SELECT TOP ' + @CURRECCOUNT + ' ID,NAME,Sex,Address,Salary FROM Table1 WHERE ID NOT IN ' 
                   + '(SELECT TOP ' + @PRERECCOUNT + 'ID FROM Table1 WHERE STATUS='+@STAFFSTATUS+' ORDER BY ID ASC) '
                   + 'ORDER BY ID ASC'
                   )
   END
GO