汇总语法

REPORT ZTEST.


TYPES:BEGIN OF TY_DATA,
        NUMBER       TYPE C,
        PRICE        TYPE I,
        CATEGORY(20) TYPE C,
      END OF TY_DATA.

TYPES:BEGIN OF TY_SUM,
        NUMBER TYPE C,
        PRICE  TYPE I,
      END OF TY_SUM.

DATA: LT_DATA TYPE TABLE OF TY_DATA,
      LT_SUM1 TYPE TABLE OF TY_SUM,
      LS_SUM1 TYPE TY_SUM,
*      LT_SUM2 TYPE TABLE OF TY_SUM,
*      LS_SUM2 TYPE TY_SUM,
      LT_SUM3 TYPE TABLE OF TY_SUM,
      LS_SUM3 TYPE TY_SUM,
      LT_SUM4 TYPE TABLE OF TY_SUM,
      LS_SUM4 TYPE TY_SUM.


DATA:   LV_SUM TYPE I.

LT_DATA = VALUE #(
( NUMBER = 'a' PRICE = 23 CATEGORY = 'xxx')
( NUMBER = 'a' PRICE = 23 CATEGORY = 'xxx')
( NUMBER = 'a' PRICE = 23 CATEGORY = 'xxx')
( NUMBER = 'b' PRICE = 23 CATEGORY = 'xxx')
( NUMBER = 'b' PRICE = 23 CATEGORY = 'AAA')
( NUMBER = 'b' PRICE = 111 CATEGORY = 'AAA')
( NUMBER = 'b' PRICE = 12 CATEGORY = 'AAA')
( NUMBER = 'c' PRICE = 23 CATEGORY = 'AAA')
( NUMBER = 'c' PRICE = 21 CATEGORY = 'AAA')
( NUMBER = 'c' PRICE = 11 CATEGORY = 'AAA')
( NUMBER = 'c' PRICE = 11 CATEGORY = 'AAA')
).


**1.
*LOOP AT LT_DATA INTO DATA(LS_DATA).
*  LS_SUM1  = VALUE #(
*   NUMBER = LS_DATA-NUMBER
*   PRICE = LS_DATA-PRICE ).
*
*  COLLECT LS_SUM1 INTO LT_SUM1.
*ENDLOOP.
*
*CL_DEMO_OUTPUT=>DISPLAY( LT_SUM1 ).
*
*" 2.
*SELECT NUMBER,SUM( PRICE ) AS PRICE
*  FROM @LT_DATA AS A
*  GROUP BY NUMBER
*  ORDER BY NUMBER ASCENDING
*  INTO TABLE @DATA(LT_SUM2).
*
*CL_DEMO_OUTPUT=>DISPLAY( LT_SUM2 ).
*
**3.
*
*LOOP AT LT_DATA INTO DATA(LS_DATA3) GROUP BY LS_DATA3-NUMBER ASSIGNING FIELD-SYMBOL(<KEY>).
*  LOOP AT GROUP <KEY> ASSIGNING FIELD-SYMBOL(<KEY_MEMBER>).
*    LS_SUM3-NUMBER = <KEY_MEMBER>-NUMBER.
*    LV_SUM = <KEY_MEMBER>-PRICE + LV_SUM.
*  ENDLOOP.
*  LS_SUM3-PRICE = LV_SUM.
*  APPEND LS_SUM3 TO  LT_SUM3.
*  CLEAR: LV_SUM,LS_SUM3.
*ENDLOOP.
*
*CL_DEMO_OUTPUT=>DISPLAY( LT_SUM3 ).

*4 使用COLLECT 注意只能汇总数量金额字段 其他无关字段需要Clear 或者放到另一个结构中汇总
LOOP AT LT_DATA INTO DATA(LS_DATA).
  MOVE-CORRESPONDING LS_DATA TO LS_SUM4.
  COLLECT LS_SUM4 INTO LT_SUM4.
ENDLOOP.


CL_DEMO_OUTPUT=>DISPLAY( LT_SUM4 ).