Add a Code to Change the ABAP Query

Question

Hi All,
I have a requirement in which i need to add a check box to a selection screen in ABAP query i inserted this check box in the infoset .The report is using joins from table EKKO,EKPO and EKES and display all the Vendor Confirmation details but when the user clicks on the checkbox which is added on the selection screen the report should only display the latest date Vendor confirmation for each line item of the PO.So i need your help how and where should i add the code for this in the Query???
Result when no Checkbox is ticked
PO    LineItem     Date
100       1           15.01.2010   
100        1           15.02,2010
100        1           15.02.2010
Result when Checkbox is ticked
PO    LineItem     Date
100        1           15.02,2010
100        1           15.02.2010
Please help!!!
Regards,
KB

Answer 1

HI,
After selecting data from tables EKKO,EKPO and EKES in internal table, sort that internal table in descending order of date and in ascending order of PO number and line item and then delete adjacent duplicates from that internal table by comparing PO number and line item. This will give you the latest entry for each PO number and line item.
PFB the sample code..
*--after select query on EKKO, EKPO and EKES
SORT itab  po_number ascending line_item ascending date descending.
DELETE ADJACENT DUPLICATES FROM itab COMPARING po_number line_item.
Let's say input file contains following data
PO LineItem Date
100 1 15.01.2010
100 1 15.02.2010
101 1 15.02.2010
101 1 15.02.2010
Above code will give you output as given below :
PO LineItem Date
100 1 15.02.2010
101 1 15.02.2010
Regards,
Pranjali