52 lines
1.5 KiB
Markdown
52 lines
1.5 KiB
Markdown
---
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{
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"title": "LINK DATABASE",
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"language": "zh-CN"
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}
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---
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<!--
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Licensed to the Apache Software Foundation (ASF) under one
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or more contributor license agreements. See the NOTICE file
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distributed with this work for additional information
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regarding copyright ownership. The ASF licenses this file
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to you under the Apache License, Version 2.0 (the
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"License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing,
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software distributed under the License is distributed on an
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"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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KIND, either express or implied. See the License for the
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specific language governing permissions and limitations
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under the License.
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-->
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# LINK DATABASE
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## description
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（已废弃！！！）
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该语句用户链接一个逻辑集群的数据库到另外一个逻辑集群, 一个数据库只允许同时被链接一次，删除链接的数据库
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并不会删除数据，并且被链接的数据库不能被删除, 需要管理员权限
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语法
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LINK DATABASE src_cluster_name.src_db_name des_cluster_name.des_db_name
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## example
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1. 链接test_clusterA中的test_db到test_clusterB,并命名为link_test_db
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LINK DATABASE test_clusterA.test_db test_clusterB.link_test_db;
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2. 删除链接的数据库link_test_db
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DROP DATABASE link_test_db;
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## keyword
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LINK,DATABASE
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