DB类host=$host; $this->user=$user; $this->pass=$pass; $this->data=$data; $this->conn=$conn; $this->code=$code; $this->connect(); } public function __get($name){return $this->$name;} public function __set($name,$value){$this->$
oracl 和db2 常用语法比较： 1、取前N条记录 Oracle：Select * from TableName where rownum <= N; DB2：Select * from TableName fetch first N rows only; 2、取得系统日期 Oracle：Select sysdate from dual; DB2：Select current timestamp from sysibm.sysdummy1; 3、空值转换 Oracle：Select
