88 lines
1.9 KiB
Markdown
88 lines
1.9 KiB
Markdown
---
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{
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"title": "RECOVER",
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"language": "en"
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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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### Name
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RECOVER
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### Description
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This statement is used to restore a previously deleted database, table or partition
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grammar:
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1. restore database
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```sql
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RECOVER DATABASE db_name;
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```
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2. restore table
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```sql
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RECOVER TABLE [db_name.]table_name;
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```
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3. restore partition
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```sql
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RECOVER PARTITION partition_name FROM [db_name.]table_name;
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```
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illustrate:
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- This operation can only restore meta information that was deleted in the previous period. Default is 1 day. (Configurable through the `catalog_trash_expire_second` parameter in fe.conf)
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- If a new meta information with the same name and type is created after the meta information is deleted, the previously deleted meta information cannot be recovered
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### Example
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1. Restore the database named example_db
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```sql
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RECOVER DATABASE example_db;
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```
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2. Restore the table named example_tbl
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```sql
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RECOVER TABLE example_db.example_tbl;
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```
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3. Restore the partition named p1 in table example_tbl
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```sql
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RECOVER PARTITION p1 FROM example_tbl;
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```
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### Keywords
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RECOVER
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### Best Practice
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