首頁PolarDB雲原生資料庫PolarDB PostgreSQL版(相容Oracle)開發指南(Oracle文法相容2.0)DBLink與外部表格CREATE [PUBLIC] DATABASE LINK 搜尋幫助內容 CREATE [PUBLIC] DATABASE LINK 更新時間:2024-07-06 03:39 產品 社區 CREATE [PUBLIC] DATABASE LINK建立一個資料庫連接。 文法 ---串連到PolarDB PostgreSQL版(相容...
PolarDB PostgreSQL版(相容Oracle)提供了網路通道管理功能,通過網路通道您可以基於fdw外部表格、dblink、database link等多種方式實現跨庫訪問資料,使得跨庫訪問資料變得更為靈活和便捷。本文介紹如何建立PolarDB PostgreSQL版(相容Oracle)到ECS自建PostgreSQL資料庫的網路通道。
如果创建过程中提示 oracle_fdw/postgres_fdw 插件不存在,请通过 CREATE EXTENSION 命令创建。 创建oracle_fdw数据库连接。 CREATE DATABASE LINK ora_dblink CONNECT TO admin IDENTIFIED BY 'mypassword' USING '//orachannel/acctg'; 创建postgres_fdw数据库连接。 CREATE DATABASE LINK pg_dblink CONNECT TO admi...
DBLink与外部表 分区表 开发指南(Oracle语法兼容1.0) 时空引擎(GanosBase) 技术白皮书 性能白皮书 性能调优指南 安全合规 API参考 SDK下载 常见问题 术语 相关协议 首页云原生数据库 PolarDB云原生数据库PolarDB PostgreSQL版(兼容Oracle)开发指南(Oracle语法兼容2.0)SQL语法DDL(数据定义语句)CREATE SCHEMA ...
This module is a PostgreSQL extension which provides the Oracle compatible nvl function feature. Use below command in source directory of nvlfunc to install the module. make install Then use the below command to create extension nvlfunc in database. ...
rowids on a foreign table by specifying either theWITH (ROWIDS)orWITH (ROWIDS=true)option in theCREATE FOREIGN TABLEsyntax. Specifying theWITH (ROWIDS)orWITH (ROWIDS=true)option adds a rowid column to a foreign table. For information aboutCREATE FOREIGN TABLE, see thePostgreSQL cor...
The user of a view must have permissions to call all functions the view uses. For more information about the Postgres REFRESH MATERIALIZED VIEW command, see the PostgreSQL core documentation. Examples This statement creates a materialized view named dept_30: → WrapCopy CREATE M...
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As you probably know, MySQL has been bought by Oracle. When that happened, the project has split into 2 separate projects: Oracle MySQL and MariaDB The idea behind MariaDB was to keep the opensource aspect of MySQL going. One of the latest developments (to date) is something calledflexviews...
This module is a PostgreSQL extension which provides the Oracle compatible nvl function feature. Use below command in source directory of nvlfunc to install the module. make install Then use the below command to create extension nvlfunc in database. ...