Reg select query problem

Question

hi all,
hope all r doing fine?
anyway i have a query which is mentioned below:-
select field1,.....fieldn
         from <dbtable1>
         into corresponding fields of table itab
         where <condition>.
select field1,...fieldn
          from <dbtable2>
         appending corresponding fields of table itab
        where <condition>.
the above two select stmts retrieve same set of  fields from two different database tables into same internal table itab..
now my question is ...........is any other way to change 2nd select statement without using appending correspondin fields
but the functionality should remain the same as it is after changing..................
bcos appending corresponding is causing performance problem in data retrieval.
thanx alot in advance.
for sure points will be given for all the helpful answers
Jack

Answer 1

Hi,
You can use like that:
select field1,.....fieldn
from <dbtable1>
into corresponding fields of table itab1
where <condition>.
select field1,...fieldn
from <dbtable2>
appending corresponding fields of table itab2
where <condition>.
now u use:
loop at itab2 into w_itab2.
read table itab1 into w_itab1 with key w_itab1-<primary field> = w_itab2-<Primary field>.
if sy-subrc = 0.
  append w_final into i_final.
else continue.
endif.
endloop.
*i_final table having all data ( i.e itab2 & itab1 data)