Filtering Internal Table

Hi All,

I have to filter the records from Final table T_OUTPUT based on the selection criteria, need to delete record sin T_OUTPUT if the PO number is not in T_TEMP and T_TEMP is not initial. Similarly delete records if the PO number is not in T_TEMP1 and T_TEMP1 is not initial and delete records if the PO number is not in T_TEMP2 and T_TEMP2 is not initial.

Can any one provide logic for this..

thanks in advance

Khan