What can be used for replacing SELECT SINGLE * ?

Question

What can be used for replacing SELECT SINGLE *  for improving the performance in the following statements?
SELECT SINGLE * FROM REGUV
   WHERE LAUFD = G_WLAUFD "RUN DATE ,SY-DATUM
     AND LAUFI = P_LAUFI.  "IDENTICATION NO
SELECT SINGLE * FROM T100
   INTO CORRESPONDING FIELDS OF G_T100_WA
    WHERE SPRSL = G_T_IALLMESS-MSGSPRA
      AND ARBGB = G_T_IALLMESS-MSGID
      AND MSGNR = G_T_IALLMESS-MSGNR.
SELECT SINGLE * FROM TBTCO
   INTO CORRESPONDING FIELDS OF TBTCO
    WHERE JOBNAME = FS_JOBNAME.

Answer 1

If you need all the fields and you know that only one record exists then u need to use select single * only. You can improve the performance by specifying key fields in the where clause of select statements. If the structure of the work area or internal table in which you are fetching the data is same as that of the database table then no need to use corresponding fields clause.
Best Regards,
Vibha
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