You can build a new internal table with only selected entries and fields like this: *&---------------------------------------------------------------------* *& Report ZREP_LCLCLASS *&---------------------------------------------------------------------* *& Demonstrates modern ABAP syntax: REDUCE, FILTER, FOR expressions *&---------------------------------------------------------------------* REPORT zrep_lclclass. *---------------------------- * Example 1: REDUCE Operator *---------------------------- TYPES: BEGIN OF ty_order, id TYPE i, amount TYPE i, END OF ty_order. DATA: lt_orders TYPE STANDARD TABLE OF ty_order WITH EMPTY KEY, lv_total TYPE i. lt_orders = VALUE #( ( id = 1 amount = 100 ) ( id = 2 amount = 250 ) ( id = 3 amount = 150 ) ). lv_total = REDUCE i( INIT sum = 0 FOR order IN lt_orders NEXT sum = sum + order-amount ). WRITE: / '--- REDUCE Example ---', / 'Total Amount:', lv_total. *---------------------------- * Example 2: FILTER Operator *---------------------------- TYPES: BEGIN OF ty_user, name TYPE string, status TYPE string, END OF ty_user. DATA: lt_users TYPE STANDARD TABLE OF ty_user WITH EMPTY KEY, lt_active_users TYPE STANDARD TABLE OF ty_user WITH EMPTY KEY. lt_users = VALUE #( ( name = 'Alice' status = 'ACTIVE' ) ( name = 'Bob' status = 'INACTIVE' ) ( name = 'Charlie' status = 'ACTIVE' ) ). lt_active_users = FILTER #( lt_users WHERE status = 'ACTIVE' ). WRITE: / '--- FILTER Example ---'. LOOP AT lt_active_users INTO DATA(user). WRITE: / user-name, user-status. ENDLOOP. *------------------------------------------------------ * Example 3: FOR Expression - Extract Specific Fields *------------------------------------------------------ DATA: lt_names TYPE STANDARD TABLE OF string WITH EMPTY KEY. lt_names = VALUE string_table( FOR user IN lt_users WHERE ( status = 'ACTIVE' ) ( user-name ) ). WRITE: / '--- FOR Expression Example ---'. LOOP AT lt_names INTO DATA(name). WRITE: / name. ENDLOOP. This creates a new string table containing only the names of users whose status = 'ACTIVE'—short, clean, and readable. Output: — ...
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REDUCE is used to aggregate values like totals, counts, etc., in a clean, functional style. *&---------------------------------------------------------------------* *& Report ZREP_LCLCLASS *& *&---------------------------------------------------------------------* *& *& *&---------------------------------------------------------------------* REPORT zrep_lclclass. TYPES: BEGIN OF ty_order, id TYPE i, amount TYPE i, END OF ty_order. DATA: lt_orders TYPE STANDARD TABLE OF ty_order WITH EMPTY KEY, lv_total TYPE i. lt_orders = VALUE #( ( id = 1 amount = 100 ) ( id = 2 amount = 250 ) ( id = 3 amount = 150 ) ). lv_total = REDUCE i( INIT sum = 0 FOR order IN lt_orders NEXT sum = sum + order-amount ). WRITE: / 'Total Amount:', lv_total. Output: Total Amount: 500