SQL语句中@XXX是什么?作用是什么?database links
如何创建?database links 是数据库之间的通路,建立连接后通过select * from tbname@linkname;可以访问远程数据库。如何创建?create database link db_1 connect to db_2_user identified by "db_2_user_password" using 'DEMO = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL =
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2020-08-19 17:54:58 ·
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