ABAP语法篇1 DATA新用法

@DATA  按取数指定的字段定义内表结

定义工作区：

SELECT SINGLE *
          FROM lfbk
          INTO @DATA(is_lfbk)
         WHERE lifnr EQ @gs_zmmtd049-lifnr.

CONCATENATE is_lfbk-bankn is_lfbk-bkref INTO gs_zmmtd049-bankn.
       CONDENSE gs_zmmtd049-bankn.

 SELECT *
    INTO TABLE @DATA(lt_plaf)
    FROM plaf
   WHERE plwrk EQ @p_werks
     AND psttr IN @s_budat
     AND plnum IN @s_plnum.
  IF lt_plaf[] IS INITIAL.
    MESSAGE e018 DISPLAY LIKE gc_e.
    LEAVE LIST-PROCESSING.
  ENDIF.

  IF lt_plaf[] IS NOT INITIAL.
    SELECT *
      FROM resb
      FOR ALL ENTRIES IN @lt_plaf
    WHERE plnum = @lt_plaf-plnum
* AND posnr = @lt_caufv-b-posnr
      AND xloek EQ @space
      AND alpgr IS NOT INITIAL
      INTO TABLE @DATA(lt_resb).
    IF lt_resb[] IS INITIAL.
      MESSAGE e033 DISPLAY LIKE gc_e.
      LEAVE LIST-PROCESSING.
    ENDIF.
    SORT lt_resb BY aufnr posnr.
    gt_resbkeys = CORRESPONDING #( lt_resb ).
    SORT gt_resbkeys BY aufnr posnr.

    SELECT *
      INTO TABLE @DATA(lt_makt)
      FROM makt
      FOR ALL ENTRIES IN @lt_resb
    WHERE matnr = @lt_resb-matnr
      AND spras = @sy-langu.
    SORT lt_makt BY matnr.
  ENDIF.

定义工作区：

        SELECT SINGLE *
          FROM lfbk
          INTO @DATA(is_lfbk)
         WHERE lifnr EQ @gs_zmmtd049-lifnr.

       CONCATENATE is_lfbk-bankn is_lfbk-bkref INTO gs_zmmtd049-bankn.
       CONDENSE gs_zmmtd049-bankn.

语法说明：

Example                                                                                                   

Inline declaration of an internal table as a target field of an assignment and inline declaration of an appropriate work area in a LOOP.

TYPES t_itab TYPE TABLE OF i
             WITH NON-UNIQUE KEY table_line.

DATA(itab) = VALUE t_itab( ( 1 ) ( 2 ) ( 3 ) ).
LOOP AT itab INTO DATA(wa).
  ...
ENDLOOP.

Example

Inline declaration of an internal table as a target field of a SELECT statement and inline declaration of a variable for the table transformed to HTML. The data type of the variable is determined by the return value of the method.

SELECT *
       FROM scarr
       INTO TABLE @DATA(itab).

DATA(html) = cl_demo_output=>get( itab ).

Example

If a data object called data does not exist in the current context, the first statement is an inline declaration and the second statement executes a substring access.

• DATA(data) = '1'.
  DATA(data) = '2'.

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