SAP Query Creation

Question

Hi All,
I am creating a SAP query in the system using the tables KONP,MBEW & A018 i could join tables KONP & MBEW but i am not able to add the table A018 and a error message is displayed
Error Message:
Table A018 cannot be used in a join
Message no. AQ501
Diagnosis
1. You cannot read the selected table with SELECT statements (because, for example, it is a structure without a database table). Therefore, this table cannot be read within a table join either.
2. The chosen table is a pool or cluster table. These tables may not be used in a table join.
Can anyone tell me a alternative to join this table to MBEW & KONP.
I want this Join Conditions:
MBEW-MATNR = A018-MATNR
A018-KAPPL = KONP-KAPPL     
A018-KSCHL = KONP-KSCHL     
A018-KNUMH = KONP-KNUMH
Thanks & Regards
Andrew
Edited by: Andrew J on Dec 18, 2008 2:49 PM

Answer 1

hi,
use  FOR ALL ENTRIES
EXAMPLE:
Exporting all flight data for a specified departure city. The relevant airlines and flight numbers are first put in an internal table entry_tab, which is evaluated in the WHERE condition of the subsquent SELECT statement.
PARAMETERS p_city TYPE spfli-cityfrom.
TYPES: BEGIN OF entry_tab_type,
         carrid TYPE spfli-carrid,
         connid TYPE spfli-connid,
       END OF entry_tab_type.
DATA: entry_tab   TYPE TABLE OF entry_tab_type,
      sflight_tab TYPE SORTED TABLE OF sflight
                       WITH UNIQUE KEY carrid connid fldate.
SELECT carrid connid
       FROM spfli
       INTO CORRESPONDING FIELDS OF TABLE entry_tab
       WHERE cityfrom = p_city.
SELECT carrid connid fldate
       FROM sflight
       INTO CORRESPONDING FIELDS OF TABLE sflight_tab
       FOR ALL ENTRIES IN entry_tab
       WHERE carrid = entry_tab-carrid AND
             connid = entry_tab-connid.
REGARDS
RAHUL