ORACLE中怎样用正则表达式过滤中文字符答:if lengthb(substr(p_name,i,1))=2 then v_comma := instrb(v_code,',');v_code_q := to_number(substrb(v_code,1,v_comma-1));v_code_w := to_number(substrb(v_code,v_comma+1,abs(instrb(v_code,',',1,2)-v_comma-1)));if v_code_q>=176 and v_code_q<=247...