oracle 中 最后一位数字是1就显示0,是9就进位答:select case when substr(mod(9.58,1),length(mod(9.58,1)),1)='1' then to_char(ROUND(9.58,length(mod(9.58,1))-2),'9999.00') when substr(mod(9.58,1),length(mod(9.58,1)),1)='9' then to_char(ROUND(9.58,length(mod(9.58,1))-2),'9999.00') el...