Not updating ztable

Question

Hi experts,
Please help me.
following is my code to update ZTABLE.
LOOP AT t_coil INTO w_coil.
     SELECT SINGLE * FROM zstock
                     INTO w_stock
                     WHERE coilno = w_coil-coilno
                     AND slitid = w_coil-slitid.
     IF sy-subrc = 0.
       SELECT SINGLE * INTO w_lst FROM zcoilst WHERE coilno = w_coil-coilno
                      AND slitid = w_coil-slitid.
       IF w_lst-currpos <> '91'.
         UPDATE zcoilst SET currpos = '91'
                        WHERE coilno = w_coil-coilno
                        AND slitid = w_coil-slitid
                        and TIMES = w_lst-TIMES.
       ENDIF.
     ENDIF.
   ENDLOOP.
its working in Development but not in Quality.
help me.
thanks in advance
laxman.

Answer 1

Hi Laxman,
1) Please use select queries outside loop instead you can use Read statements inside loop.
2) Instead of using update statement in loop use update outside using internal table.
3) If code is working perfectly in DEV and not in QAT  then try and debug the code you will surely
   get the answer.
thanks,
vidyasagar