你好：批发销售单增加商品库位函数为：
db_data3(~"select branch_name from t_branch_info where branch_no =(select storage from t_kc_range where item_no=? and branch_no=(select branch_no from t_pf_out_master where sheet_no=?))~",item_no,sheet_no)

如果是要在其它单据里增加请再说明。