Postgres數據庫dblink使用說明

添加dblink拓展

執行

create extension dblink;

拓展中出現dblink時，表示添加拓展成功。

建立dblink

SELECT dblink_connect('myconn', 'dbname=postgres');

dbname爲你要遠程操做的數據庫的名字。

查詢

select * from dblink('mysconn','select * from rm.dp_photo') 
 as T(pdid character varying(25), dptdid character varying(25), version character varying(25), png bytea);

數據批量複製

insert into rmd.dp_photo
select * from dblink('mysconn','select * from rm.dp_photo') 
 as T(pdid character varying(25), dptdid character varying(25), version character varying(25), png bytea);