abap 判断字符串是否为字母+数字组合

*&---------------------------------------------------------------------*
*& Report  ZDEMO13
*&
*&---------------------------------------------------------------------*
*&
*&
*&---------------------------------------------------------------------*

REPORT zdemo13.

DATA: gv_chara(100) TYPE c,
      gv_charb(100) TYPE c.

gv_chara = '1234Abc'.

gv_charb = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' && 'abcdefghijklmnopqrstuvwxyz'
           && '1234567890'.

***判断gv_chara字符串是否为字母+数字组合
IF gv_chara CO gv_charb.
  WRITE 'co'.
ELSE.
  WRITE 'not co'.
ENDIF.

CO/CN    Contains Only/Contains Not Only
CA/NA    Contains Any/Contains Not Any
CS/NS    Contains String/Contains No String
CP/NP    Covers Pattern/No Pattern