SQL To Monitor Table Load Progress

DECLARE @1 TABLE (Startcnt1 BIGINT, Startcnt2 BIGINT,Startcnt3 BIGINT, Secondcnt1 BIGINT, Secondcnt2 BIGINT, Secondcnt3 BIGINT)


INSERT INTO @1
        ( Startcnt1 ,
          Startcnt2 ,
          Startcnt3
        )
SELECT
(SELECT COUNT(1) FROM Table1),
(SELECT COUNT(1) FROM Table2),
(SELECT COUNT(1) FROM Table3)

WAITFOR DELAY '00:01'

UPDATE @1
SET Secondcnt1 = (SELECT COUNT(1) FROM Table1)

UPDATE @1
SET Secondcnt2 = (SELECT COUNT(1) FROM Table2)

UPDATE @1
SET Secondcnt3 = (SELECT COUNT(1) FROM Table3)

SELECT Startcnt1 ,
       Secondcnt1 ,
       Secondcnt1 -Startcnt1 ChangeCnt1,
       Startcnt2 ,
       Secondcnt2 ,
Secondcnt2 - Startcnt2  ChangeCnt2,
       Startcnt3 ,
       Secondcnt3 ,
Secondcnt3 - Startcnt3  ChangeCnt3
FROM @1