Linking the fields to fetch the data

Question

Hi friends,
on my selection screen i have 3 fields
S_BSTNK  =  Customer Purchase Order number
S_TKNUM = Shipment
S_KUNNR = Ship to
Now my requiremnt is
when the user enters the value in S_BSTNK , i should get all the invoices fromVBRK table.
and later for those all invoices i should get the deliveries from VBFA table.
Now for all those deliveries i should  get the SHIPMENT & SHIPTO  and should check for the values entered in S_TKNUM and S_KUNNR   ( ie : if the user enters shipment and shipto in S_TKNUM and S_KUNNR  it should get only those values which are entered ).
now later i should get Customer purchase order number ( BSTNK )  Shipment (TKNUM ) and shipto ( KUNNR ) in one internal table .
Can any one tell me how to link it.
Regards,
Priyanka.

Answer 1

Hi Priyanka,
Write like this.
If s_BSTNK is not initial.
CONCATENATE  l_cond 'BSTNK IN S_BSTNK'  INTO  l_cond SEPARATED BY space."#EC NOTEXT
    l_flag = 'X'.
select *from vbrk into it_vbrk where (l_cond).
endif.
if s_BSTNK is not initial.
  if flag = 'X'.
select * from VBFA into table it_VBFA for all entires in it_vbrk where (l_cond)
endif.
endif.
if S_TKNUM is not initial.
if l_flag = 'X'.
CONCATENATE  l_cond 'AND' INTO  l_cond SEPARATED BY space.
endif.
CONCATENATE  l_cond 'TKNUM IN s_tknum'  INTO  l_cond SEPARATED BY space.
select * from vtfa into table it_vtfa where (l_comd).
endif.
if S_KUNNR is not initial.
if l_flag = 'X'.
CONCATENATE  l_cond 'AND' INTO  l_cond SEPARATED BY space.
endif.
CONCATENATE  l_cond 'KUNNR IN s_KUNNR'  INTO  l_cond SEPARATED BY space.
select * from kna1 into table it_vtfa where (l_comd).
endif.
This how you have to write dynmic selection.
Id on't which tables and fields u want to get
jsut i have written using * u can write u r own fields.
I think it will solve u r pblm.
If not please let me know i will help you.
Thanks,