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如何读取表字段描述[DDIF_FIELDINFO_GET]

石头 6月 22, 2017 函数 8,065 views 0

abap语言中可以通过函数 DDIF_FIELDINFO_GET读取数据库表字段的描述。

简单的代码如下：

REPORT ztest_get_field_desc.

DATA:git_dfies TYPE STANDARD TABLE OF dfies WITH HEADER LINE.

CALL FUNCTION 'DDIF_FIELDINFO_GET'
  EXPORTING
    tabname        = 'EKKO'
    fieldname      = 'EBELN'
    langu          = sy-langu
*   LFIELDNAME     = ' '
*   ALL_TYPES      = ' '
*   GROUP_NAMES    = ' '
*   UCLEN          =
*   DO_NOT_WRITE   = ' '
* IMPORTING
*   X030L_WA       =
*   DDOBJTYPE      =
*   dfies_wa       = gwa_dfies
*   LINES_DESCR    =
  TABLES
    dfies_tab      = git_dfies[]
*   FIXED_VALUES   =
  EXCEPTIONS
    not_found      = 1
    internal_error = 2
    OTHERS         = 3.
IF sy-subrc = 0.
* Implement suitable error handling here
  LOOP AT git_dfies.
    WRITE:/ 'scrtext_l:', git_dfies-scrtext_l,
          / 'scrtext_m:', git_dfies-scrtext_m,
          / 'scrtext_s:', git_dfies-scrtext_s.
  ENDLOOP.
ENDIF.