Logical error in join stmt

Question

Hi,
Pls tell me whats wrong with this stmt which is giving null values .
  SELECT Aaufnr Bgstri Bgstrs Aautyp Aloekz Akokrs A~abkrs
             into corresponding fields of table it_aufk
             FROM AUFK AS A
             INNER JOIN AFKO AS B
             ON Aerdat = Bgstrs
             WHERE B~gstrs in s_date
             AND A~WERKS = P_IWERK
             AND A~AUART = S_AUART.

Answer 1

Just like the below Example:
Join the columns carrid, carrname and connid of the database tables scarr and spfli using an outer join. The column connid is set to the null value for all flights that do not fly from p_cityfr. This null value is then converted to the appropriate initial value when it is transferred to the assigned data object. The LOOP returns all airlines that do not fly from p_cityfr.
PARAMETERS p_cityfr TYPE spfli-cityfrom.
DATA: BEGIN OF wa,
        carrid   TYPE scarr-carrid,
        carrname TYPE scarr-carrname,
        connid   TYPE spfli-connid,
      END OF wa,
      itab LIKE SORTED TABLE OF wa
                WITH NON-UNIQUE KEY carrid.
SELECT scarrid scarrname p~connid
       INTO CORRESPONDING FIELDS OF TABLE itab
       FROM scarr AS s
       LEFT OUTER JOIN spfli AS p ON scarrid   =  pcarrid
                                  AND p~cityfrom = p_cityfr.
LOOP AT itab INTO wa.
  IF wa-connid = '0000'.
    WRITE: / wa-carrid, wa-carrname.
  ENDIF.
ENDLOOP.
Follow your code like the below:
SELECT A~aufnr
              A~autyp
              A~loekz
              A~kokrs
              A~abkrs
             B~gstri
             B~gstrs
into table it_aufk
FROM AUFK AS A
INNER JOIN AFKO AS B
ON Aerdat = Bgstrs
WHERE B~gstrs in s_date
AND A~WERKS = P_IWERK
AND A~AUART in S_AUART.