请尝试以下代码。请注意,您需要在START-OF_SELECTION之前设置值
select-OPTIONS: so_date FOR sy-datlo. INITIALIZATION. so_date-sign = 'I'. so_date-option = 'EQ'. so_date-low = sy-datum. CLEAR so_date-high. APPEND so_date.
您也可以尝试这个简单的选项-
select-OPTIONS: so_date FOR sy-datlo default SY-DATUM.