Problem in update statment when using where condtion

Question

Hi ,
      Iam using update statment to update field in Z-Table .My statment is not working fine as per my requirement.The statment is as below,
UPDATE ZFINAL_DATA  SET ZDATE_FLAG = SPACE where ZGLOBAL_CODE ( SELECT LIFNR FROM LFA1 WHERE KTOKK = 'ZLIE' ).
But this statment is doing my purpose .
My requirement is , I need to update ZDATE_FLAG = SPACE in ZFINAL_DATA table when LFA1 -LIFNR = ZFINAL_DATA-ZGLOBAL_CODE and LFA1-KTOKK = 'ZLIE'.
Can any correct the update statment which will be helpfull to proceed further .
Regards,
Sriram

Answer 1

Hi Sriram,
Have a look into the logic of the below query. Maybe this will fulfil the requirement.
TYPES:     BEGIN OF lt_lifnr,
         lifnr TYPE lifnr,
     END OF lt_lifnr.
DATA:      la_lifnr TYPE TABLE OF lt_lifnr,
       wa_zfinal_data TYPE zfinal_data,
       la_zfinal_data TYPE TABLE OF zfinal_data.
TABLES: zfinal_data.
SELECT lifnr
FROM lfa1
INTO TABLE la_lifnr
WHERE ktokk = 'ZLIE'.
SORT la_lifnr BY lifnr.
SELECT *
FROM zfinal_data
INTO TABLE la_zfinal_data.
LOOP AT la_zfinal_data INTO wa_zfinal_data.
  READ TABLE la_lifnr WITH KEY lifnr = wa_zfinal_data-zglobal_code
                      BINARY SEARCH TRANSPORTING NO FIELDS.
  IF sy-subrc = 0.
    wa_zfinal_data-zdate_flag = space.
    MODIFY la_zfinal_data
    FROM wa_zfinal_data
    INDEX sy-tabix
    TRANSPORTING zdate_flag.
  ENDIF.
ENDLOOP.
MODIFY zfinal_data FROM TABLE la_zfinal_data.
COMMIT WORK.