55 lines
1.8 KiB
Markdown
55 lines
1.8 KiB
Markdown
---
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{
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"title": "RECOVER",
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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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# RECOVER
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## description
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该语句用于恢复之前删除的 database、table 或者 partition
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语法：
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1) 恢复 database
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RECOVER DATABASE db_name;
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2) 恢复 table
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RECOVER TABLE [db_name.]table_name;
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3) 恢复 partition
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RECOVER PARTITION partition_name FROM [db_name.]table_name;
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说明：
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1. 该操作仅能恢复之前一段时间内删除的元信息。默认为 1 天。（可通过fe.conf中`catalog_trash_expire_second`参数配置）
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2. 如果删除元信息后新建立了同名同类型的元信息，则之前删除的元信息不能被恢复
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## example
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1. 恢复名为 example_db 的 database
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RECOVER DATABASE example_db;
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2. 恢复名为 example_tbl 的 table
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RECOVER TABLE example_db.example_tbl;
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3. 恢复表 example_tbl 中名为 p1 的 partition
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RECOVER PARTITION p1 FROM example_tbl;
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## keyword
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RECOVER
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