new syntax abap

*&---------------------------------------------------------------------*
*& Report ZC507R_SAMPLE_ITAB
*&---------------------------------------------------------------------*
*&
*&---------------------------------------------------------------------*
REPORT zc507r_sample_itab.


*DATA : BEGIN OF ls_data,
*         num(5)   TYPE n,
*         result(10),
*       END OF ls_data,
*
*       lt_data LIKE TABLE OF ls_data.
*ls_data-num = 1.
*ls_data-result = 'ABCDEFG'.
*APPEND ls_data TO lt_data.
*
*ls_data-num = 2.
*ls_data-result = 'HIJKLMN'.
*APPEND ls_data TO lt_data.
*
*ls_data-num = 3.
*ls_data-result = 'OPQRSTU'.
*APPEND ls_data TO lt_data.
*
*ls_data-num = 4.
*ls_data-result = 'VWXYZ'.
*APPEND ls_data TO lt_data.
*
*
*
**//pseoudo code.
**
**4번 반복.
**인덱스 값이 같으면
**index는 5로 result 는 ab로 변경해 주시고
**index는 5로 result 는 ab로 변경해 주시고
**index는 5로 result 는 ab로 변경해 주시고
**index는 5로 result 는 ab로 변경해 주시고
**index는 5로 result 는 ab로 변경해 주시고
**
**수정해주세요.
*
*
*data : ls_data2  like ls_data,
*       lt_data2  LIKE TABLE OF ls_data,
*       lv_tabix  TYPE sy-tabix.
*
*clear : ls_data2, lv_tabix.
*refresh : lt_data2.
*
*LOOP AT lt_data INTO ls_data.
*
*  lv_tabix = sy-tabix.
*
*  CASE ls_data-num.
*    WHEN 1.
*        ls_data2-num = 5.
*        ls_data2-result = 'AA'.
*        MODIFY lt_data2 FROM ls_data2 INDEX lv_tabix.
*
*    WHEN 2.
*        ls_data2-num = 6.
*        ls_data2-result = 'CD'.
*        MODIFY lt_data2 FROM ls_data2 INDEX lv_tabix.
*
*    WHEN 3.
*        ls_data2-num = 7.
*        ls_data2-result = 'EF'.
*        MODIFY lt_data2 FROM ls_data2 INDEX lv_tabix.
*
*    WHEN 4.
*        ls_data2-num = 8.
*        ls_data2-result = 'GH'.
*        MODIFY lt_data2 FROM ls_data2 INDEX lv_tabix.
*
*  ENDCASE.
*
*ENDLOOP.
*
*cl_demo_output=>DISPLAY( LT_DATA2 ).

**********************************************************************************
SELECTION-SCREEN BEGIN OF BLOCK bl1 WITH FRAME TITLE TEXT-t01.


DATA : lv_carrid  TYPE sflight-carrid,
       ls_sflight TYPE sflight.

SELECT SINGLE carrid connid
  INTO (lv_carrid, ls_sflight-connid)
  FROM sflight
  WHERE carrid = 'AA'.


* new syntx 기존 변수 활용시
SELECT carrid, connid
  FROM sflight
  WHERE carrid = @pa_carrid " where 조건에 오는  변수는 @를 넣어줘야한다. escape 문자.
   INTO(@lv_carrid, @ls_sflight-connid).

* new syntx : 변수 선언하면서 사용시.
  SELECT SINGLE carrid, connid
    FROM sflight
    WHERE carrid = @pa_carr
    INTO ( @DATA(lv_carrid2), @DATA(lv_connid)).
**********************************************************************************
* old syntax.

  DATA : lv_connid_2 TYPE sflight-connid.

  lv_connid_2 = lv_connid.

*new syntx 변수 선언하면서 값 할당.
  DATA(lv_connid_3) = lv_connid.
**********************************************************************************

  DATA : BEGIN OF ls_data,
           carrid   TYPE sflight-carrid,
           connid   TYPE sflight-connid,
           fldate   TYPE sflight-fldate,
           price    TYPE sflight-price,
           currency TYPE sflight-currency,
         END OF ls_data,

         lt_data LIKE TABLE OF ls_data.


  SELECT carrid connid fldate price currency
    INTO CORRESPONDING FIELDS OF TABLE lt_data
    FROM sflight
    WHERE carrid = pa_carr.

* Itab 선언 없이 데이터 받기
  SELECT carrid, connid, fldate, price, currency
    FROM sflight
   WHERE carrid = @pa_carr
    INTO TABLE @DATA(lt_data2). "꼭 into TABLE 이여야 한다.

* structure 만들기 신문법.
  LOOP AT lt_data2 INTO DATA(ls_data2).

  ENDLOOP.

*********************************************************************************
  DATA : lt_data_tmp LIKE TABLE OF ls_data.

  APPEND LINES OF lt_data TO lt_data_tmp.
  MOVE-CORRESPONDING lt_data TO lt_data_tmp.
  lt_data_tmp = lt_data.

*itab 선언없이 itab의 데이터를 받기
  DATA(lt_data_tmp2) = lt_data.

*********************************************************************************

  DATA : lt_list LIKE ls_data.

  DATA(ls_list2) = ls_data.

  TYPES : BEGIN OF lty_data,
            carrid TYPE sflight-carrid,
          END OF lty_data.

  LOOP AT lt_data INTO ls_data.

*  MOVE-CORRESPONDING ls_data to ls_list.
    ls_list = CORRESPONDING #( ls_data ). " ls_data type을 맞춰서 ls_list로 맞춰라.

  ENDLOOP.
*********************************************************************************
*old syntax
  LOOP AT lt_data INTO ls_data.

    ls_list-carrid = ls_data-carrid.
    ls_list-connid = ls_data-connid.
    ls_list-fldate = ls_data-fldate.
    ls_list-price  = ls_data-price.

  ENDLOOP.

* new syntax

*넣고 싶은 것만 넣고 나머지 field 들은 초기화 시킨다.
* base 가 들어가면 초기화 시키지 않고 ls_list 상태를 남겨두고 carrid = ua connid 18인 것만 담아준다.
  LOOP AT lt_data INTO ls_data.

    ls_list = VALUE #( BASE ls_list
                       carrid = 'UA'
                       connid = 18 ).

  ENDLOOP.
*********************************************************************************
  DATA : lt_data_tmp3 LIKE TABLE OF ls_data,
         ls_data_tmp3 LIKE ls_data.

*old syntax
  LOOP AT lt_data INTO ls_data.

    ls_data_tmp3-carrid = ls_data-carrid.
    ls_data_tmp3-connid = ls_data-connid.


    APPEND ls_data_tmp3 TO lt_data_tmp3.
    CLEAR : ls_data_tmp3.


  ENDLOOP.

*new syntax => append 없이 데이터 적제.

  LOOP AT lt_data INTO ls_data.

    lt_data_tmp3 = VALUE #( BASE lt_data_tmp3
                            (
                             carrid = ls_data-carrid
                             connid = ls_data-connid
                             )
                          ).

  ENDLOOP.


  REFRESH lt_data_tmp3.
  
  lt_data_tmp3 = VALUE #(
                          (
                            carrid = 'UA'
                            connid = 17
                          )

                          (
                            carrid = 'UA'
                            connid = 18
                          )

                          (
                            carrid = 'UA'
                            connid = 19
                          )
                        ).