GIVE ME QUICK REPLY ITS URGENT.

Question

hi,
   Is there any performance problem if i keep select single <f1> from <table> into <itab> where <condition> in loop.plz give me example code if it is problem.
thanking you.
ex:
LOOP AT ITADR2.
      SELECT SINGLE VKONT FROM FKKVKP INTO ITADR2-VKONTO
           WHERE ADRNB EQ ITADR2-ADDRNUMBER.
      SELECT SINGLE COKEY FROM EVER INTO ITADR2-COKEY
            WHERE VKONTO EQ ITADR2-VKONTO AND COKEY IN S_COKEY.
      IF SY-SUBRC EQ 0.
        IF ITADR2-ADDRNUMBER NE ' '.
          MOVE ITADR2 TO ITADR2FT.
          IF ITADR2FT-TEL_EXTENS EQ 'SMS'.
            ITADR2FT-MLIND = 'M'.
            APPEND ITADR2FT.
          ELSE.
            ITADR2FT-MLIND = 'L'.
            APPEND ITADR2FT.
          ENDIF.
        ENDIF.
      ENDIF.
    ENDLOOP.

Answer 1

Hi,
select <f1> from <table> into <itab> where <condition>
if not itab[] is initial.
select VKONT FROM FKKVKP into table t_vkont for all entries in itab
WHERE ADRNB EQ itab-ADDRNUMBER.
SELECT COKEY FROM EVER INTO t_cokey for all entries in itab
WHERE VKONTO EQ itab-VKONTO AND COKEY IN S_COKEY.
endif.
Loop at itab.
read table t_vkont key ADRNB = itab-addrnumber.
read table t_cokey key vkonto = itab-vkonto.
Your logic if sy-subrc is true.
endloop.
Please reward if useful.
regards,
sachin