HOW TO USE A SINGLE PERFORM FOR VARIOUS TABLES ?

perform test TABLES t_header.

select

KONH~KNUMH

konh~datab

konh~datbi

konp~kbetr

konp~konwa

konp~kpein

konp~kmein

KONP~KRECH

FROM konh INNER JOIN konp

ON konp_{knumh = konh}knumh

into table iTABXXX

"ANY TEMPERARY INTERNAL TABLE.

for all entries in t_header

where

konh~kschl = t_header-kschl

AND konh~knumh = t_header-knumh.

endform.

how can I use above perform for various internal tables of DIFFERENT LINE TYPES but having the fields KSCHL & KNUMH.