ABAP语法

  新语法~*  可以用来取值一个表中的所有数据和一个表中的部分数据
    示例如下
REPORT ZSQL.

TYPES:
  BEGIN OF TY_VBAP,
    MATNR TYPE VBAP-MATNR,
    MAKTX TYPE MAKT-MAKTX.
        INCLUDE STRUCTURE VBAK.
TYPES END OF TY_VBAP.
DATA : GT_VBAP TYPE TABLE OF TY_VBAP,
       GW_VBAP TYPE TY_VBAP.
SELECT VBAP~MATNR,
       MAKT~MAKTX,
       VBAK~*
      FROM VBAK
     INNER JOIN VBAP ON VBAK~VBELN = VBAP~VBELN
     INNER JOIN MAKT ON VBAP~MATNR = VBAP~MATNR AND SPRAS = @SY-LANGU
  UP TO 10 ROWS
  INTO CORRESPONDING FIELDS OF TABLE @GT_VBAP.

LOOP AT GT_VBAP INTO GW_VBAP .
  WRITE: GW_VBAP-VBELN ,GW_VBAP-MATNR, GW_VBAP-MAKTX.
  SKIP 1 .
ENDLOOP.

2018.03.31  “取域值

  SELECT SINGLE ddtext INTO p_sczt FROM dd07t
     WHERE domname = p_domname
       AND domvalue_l = p_domvalue_l.

2018.04.07 取值AL11 的文件目录

DATA:FILE TYPE ESEFTAPPL VALUE 'gettabledata.txt'.

CALL 'C_SAPGPARAM' ID 'NAME'  FIELD 'DIR_HOME'
                   ID 'VALUE' FIELD FILE.

  Append lines of itab1 [ from n1 ] [ to n2 ] to itab2.

把内表 itab1 的 n1 到 n2 行内容附加到 itab2 内表中去.

前提是 itab1 与 itab2 结构完成相同.

  LOOP AT  itab1 INTO DATA(WA).
     WRITE WA-MATNR .
  ENDLOOP.

  LOOP AT ITAB1 ASSIGNING FIELD-SYMBOL(<FS>).
    
  ENDLOOP.

 20180608

根据一个内表的某个或某几个字段，取出其他内表的数据

REPORT YTEST_FILTER.
TYPES:BEGIN OF TY_SPFLI,
   CARRID TYPE spfli-CARRID,
   END OF TY_SPFLI.
****需要定义为排序表或者哈希表 因为需要主键
   DATA IT_TAB TYPE SORTED TABLE OF TY_SPFLI WITH UNIQUE KEY CARRID.
   DATA IT_SPLFI TYPE TABLE OF SPFLI .
   DATA IT_SPLF1 TYPE TABLE OF SPFLI .
   DATA IT_SPLF2 TYPE TABLE OF SPFLI .

****定义参考表的实际数据
   IT_TAB = VALUE #( ( CARRID = 'AA'  )  ( CARRID = 'UA'   ) ) .

   SELECT * FROM spfli INTO CORRESPONDING FIELDS OF TABLE IT_SPLFI.

****取到实际表中的数据
   IT_SPLF1 = FILTER #( IT_SPLFI IN IT_TAB WHERE CARRID = CARRID   )  .

****显示
  CL_DEMO_OUTPUT=>DISPLAY( IT_TAB ) .

   CL_DEMO_OUTPUT=>DISPLAY( IT_SPLFI ).
   CL_DEMO_OUTPUT=>DISPLAY( IT_SPLF1 ).

 ********ADD BY CHENHD 20180731  关于 WITH KEY 与 WITH TABLE KEY 的区别。
对于标准表 两者是相同的，对于排序表，前者是线性查找，后者是二分法查找。

1) READ TABLE <ITAB> WITH KEY
         This statement always search in linear fashion.
         You can use this syntax for any type of table(standard, sorted, hased)
2) READ TABLE <ITAB> WITH TABLE KEY
         you can use this syntax only for internal table with primary keys defined
         For standard table - Linear search will be used
         For sorted table - Binary search will be used.
         For Hashed table - Hashing algorithm will be used.

REPORT 1 .

*TYPES:
*    BEGIN OF TY_OUT_TAB,
*      VBELN TYPE VBAP-VBELN,
*      POSNR TYPE VBAP-POSNR,
*      MATNR TYPE VBAP-MATNR,
*     END OF  TY_OUT_TAB.
* DATA :IT_TAB TYPE SORTED TABLE OF TY_OUT_TAB WITH UNIQUE  KEY  VBELN POSNR .
*
*  DATA WA_TAB TYPE TY_OUT_TAB.
*
* select vbeln posnr matnr FROM vbap into CORRESPONDING FIELDS OF TABLE IT_TAB UP TO 10 ROWS .
*   IF sy-subrc = 0..
*
*   ENDIF.

*
*TYPES:
*    BEGIN OF TY_OUT_TAB,
*      COL1 TYPE char20,
*      COL2 TYPE char20,
*      matnr TYPE char20,
*     END OF  ty_out_tab.
* data :IT_TAB TYPE SORTED TABLE OF TY_OUT_TAB WITH UNIQUE  KEY  COL1 COL2 .
*
*  DATA WA_TAB TYPE TY_OUT_TAB.
*
*
*
*  wa_tab-COL1 = 'A2'.
*  wa_tab-COL2 = 'AB'.
*  wa_tab-matnr = 'AC'.
*  APPEND WA_TAB TO IT_TAB.
*
*
*
*  wa_tab-COL1 = 'A1'.
*  wa_tab-COL2 = 'AB'.
*  wa_tab-matnr = 'AC'.
*  APPEND WA_TAB TO IT_TAB.
*
*
*  WA_TAB-COL1 = 'AA' .
*  WA_TAB-COL2 = 'AB' .
*  WA_TAB-MATNR = 'A1' .
*
*APPEND WA_TAB TO IT_TAB .
*IF SY-SUBRC = 0..
*
*ENDIF.

*  SELECT
*         VBELN
*         POSNR
*         MATNR
*     FROM VBAP
*     INTO CORRESPONDING FIELDS OF TABLE
*     IT_TAB UP TO 1000 ROWS .
*
*   IF SY-SUBRC = 0..
*
*   ENDIF.
*
*
*
*READ TABLE IT_TAB INTO WA_TAB  WITH KEY VBELN = '0001000021'.
* IF SY-SUBRC = 0 .
*
* ENDIF.


TYPES:
    BEGIN OF TY_OUT_TAB,
      VBELN TYPE CHAR20,
      POSNR TYPE CHAR20,
      MATNR TYPE CHAR20,
     END OF  TY_OUT_TAB.
 DATA :IT_TAB TYPE SORTED TABLE  OF TY_OUT_TAB  WITH UNIQUE KEY VBELN POSNR .
 DATA :GT_TAB TYPE TABLE OF TY_OUT_TAB  .

  DATA WA_TAB TYPE TY_OUT_TAB.



  WA_TAB-VBELN = 'B2'.
  WA_TAB-POSNR = 'AB'.
  WA_TAB-MATNR = 'AC'.
  APPEND WA_TAB TO IT_TAB.


  WA_TAB-VBELN = 'AA'.
  WA_TAB-POSNR = 'AD'.
  WA_TAB-MATNR = 'AC'.
*  APPEND WA_TAB TO IT_TAB .
  INSERT WA_TAB INTO IT_TAB INDEX 1..


  WA_TAB-VBELN = 'A0' .
  WA_TAB-POSNR = 'AB' .
  WA_TAB-MATNR = 'A1' .

*APPEND WA_TAB TO IT_TAB .
  INSERT WA_TAB INTO TABLE IT_TAB .

* CL_DEMO_OUTPUT=>DISPLAY( IT_TAB ) .


* SORT IT_TAB ASCENDING BY VBELN DESCENDING POSNR.
* SORT IT_TAB BY VBELN POSNR.
 CHECK SY-SUBRC = 0.
* SORT IT_TAB BY VBELN POSNR ASCENDING.
* SORT IT_TAB ASCENDING BY VBELN DESCENDING POSNR.

* CL_DEMO_OUTPUT=>DISPLAY( IT_TAB ) .

 INSERT WA_TAB INTO TABLE IT_TAB.
 IF SY-SUBRC = 0.

 ENDIF.

READ TABLE IT_TAB INTO WA_TAB WITH TABLE KEY VBELN = 'A0' POSNR = 'AB'.
 IF SY-SUBRC = 0.

 ENDIF.


* MOVE IT_TAB TO GT_TAB .
*
* INSERT LINES OF GT_TAB INTO IT_TAB INDEX 1..
* IF SY-SUBRC = 0.
*
* ENDIF.






*IF SY-SUBRC = 0..
*
*ENDIF.

***去除后置0

REPORT TEST_STRING .

DATA(LV_NUM) = '23.012000'.
 LV_NUM  = shift_right( val = LV_NUM sub = |0| ).
 WRITE LV_NUM.