CONVERSION_EXIT_ALPHA_INPUT 功能: 给输入的数字编号添加前置 0
CONVERSION_EXIT_ALPHA_OUTPUT 功能: 删除输入的数字编号中的前置0
******************************************************************************
* FORM: DATA_ALPHA_CONVERSION
* DESC: 前導加0
******************************************************************************
FORM data_alpha_conversion USING p_alpha.
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_INPUT'
EXPORTING
input = p_alpha
IMPORTING
output = p_alpha.
ENDFORM. "--DATA_ALPHA_CONVERSION