Internal table population

Question

Here in this code the internal table it_mseg and it_mbew
are not being populated in the following code.Can anybody please tell me what the reason.
Thanks and regards
jyoti
SELECT mblnr
         bwart
         matnr
         INTO TABLE it_mseg
         FROM mseg.
  IF it_mseg IS NOT INITIAL .
    SELECT mblnr
           bldat
           INTO TABLE it_mkpf
           FROM mkpf
           FOR ALL ENTRIES IN it_mseg
           WHERE mblnr = it_mseg-mblnr.
  ENDIF.
  IF it_mseg IS NOT INITIAL.
    SELECT matnr
           bwkey
           bwtar
           lbkum
           INTO TABLE it_mbew
           FROM mbew
           FOR ALL ENTRIES IN it_mseg
           WHERE matnr = it_mseg-matnr.
  ENDIF.

Answer 1

Hi,
  Syntax of  IF it_mseg IS NOT INITIAL is wrong
   Please check this code.
DATA:it_mseg LIKE MSEG OCCURS 0 WITH HEADER LINE,
     it_mkpf LIKE MKPF OCCURS 0 WITH HEADER LINE,
     it_mbew LIKE MBEW OCCURS 0 WITH HEADER LINE.
SELECT mblnr bwart matnr
INTO CORRESPONDING FIELDS OF TABLE it_mseg
FROM mseg.
<b>IF NOT it_mseg[] IS INITIAL .</b>
SELECT mblnr
bldat
INTO CORRESPONDING FIELDS OF TABLE it_mkpf
FROM mkpf
FOR ALL ENTRIES IN it_mseg
WHERE mblnr = it_mseg-mblnr.
ENDIF.
IF not it_mseg IS INITIAL.
SELECT matnr
bwkey
bwtar
lbkum
INTO CORRESPONDING FIELDS OF TABLE it_mbew
FROM mbew
FOR ALL ENTRIES IN it_mseg
WHERE matnr = it_mseg-matnr.
ENDIF.