mysql 中去掉字段类型为decimal中后面多余的0

//处理前 SELECT '0.12000','1.203010','-0.20' //处理后 SELECT 0+CAST('0.12000' AS CHAR),0+CAST('1.203010' AS CHAR),0+CAST('-0.20' AS CHAR) //ci框架 $this->db->select("0+CAST(price_now AS CHAR) as price_now");