Want to create dynamic SQL with table join

Question

I want to create a dynamic SQL query so that the user can enter any two table names on the selection screen and two field names that he wants to join. After which i should be able to dynamically generate the SQL (native or open) and show the result as report. I have already read the forum threads and know how to create dynamic SQL for single table, what i m struggling with is how to do inner join. I know i can use nested select but that will make the query very slow because i want to extend it to more than 2 tables later.
Will give points to useful answer for sure, thanks for reading.

Answer 1

Hi,
Following is a piece of code which I have used in my program.
DATA: ws_flds(72)   TYPE c.
DATA: ftab  LIKE TABLE OF ws_flds.
ws_flds = 'rbukrs rprctr racct ryear '.
  APPEND ws_flds TO ftab.
   SELECT (ftab)
    INTO CORRESPONDING FIELDS OF TABLE it_grp_glpca
    FROM glpca FOR ALL ENTRIES IN i_cert_item
    WHERE kokrs = c_kokrs
        AND rldnr = '8A'
        AND rrcty IN ('0','2')
        AND rvers  = '000'
        AND rbukrs = i_cert_item-bukrs
        AND ryear  = p_ryear
        AND rprctr = i_cert_item-prctr
        AND racct  = i_cert_item-saknr
        AND ( poper BETWEEN '001' AND ws_poper )
        AND aufnr IN s_aufnr
        AND kostl IN s_kostl
        AND rfarea IN s_fkber
        AND rmvct IN s_rmvct
        AND sprctr IN s_sprctr
        AND ( racct BETWEEN c_low AND c_high ).
You can now pass your table name as (p_table) or append fieldnames to the internal table (ftab). if it is join then you can append this table like abukrs asaknr..etc.
Regards
Subramanian