2021-08-27 11:32:21 +00:00
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---
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2022-08-26 19:07:59 +00:00
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slug: /zh/sql-reference/statements/rename
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2022-04-10 23:08:18 +00:00
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sidebar_position: 48
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sidebar_label: RENAME
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2021-08-27 11:32:21 +00:00
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---
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# RENAME语法 {#misc_operations-rename}
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重命名数据库、表或字典。 可以在单个查询中重命名多个实体。
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请注意，具有多个实体的`RENAME`查询是非原子操作。 要以原子方式交换实体名称，请使用[EXCHANGE](./exchange.md)语法.
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!!! note "注意"
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`RENAME`仅支持[Atomic](../../engines/database-engines/atomic.md)数据库引擎.
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**语法**
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```sql
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RENAME DATABASE|TABLE|DICTIONARY name TO new_name [,...] [ON CLUSTER cluster]
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```
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## RENAME DATABASE {#misc_operations-rename_database}
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重命名数据库.
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**语法**
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```sql
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RENAME DATABASE atomic_database1 TO atomic_database2 [,...] [ON CLUSTER cluster]
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```
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## RENAME TABLE {#misc_operations-rename_table}
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重命名一个或多个表
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重命名表是一个轻量级的操作。 如果在`TO`之后传递一个不同的数据库，该表将被移动到这个数据库。 但是，包含数据库的目录必须位于同一文件系统中。 否则，返回错误。
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如果在一个查询中重命名多个表，则该操作不是原子操作。 可能会部分执行，其他会话中可能会得到`Table ... does not exist ...`错误。
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**语法**
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``` sql
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RENAME TABLE [db1.]name1 TO [db2.]name2 [,...] [ON CLUSTER cluster]
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```
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**示例**
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```sql
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RENAME TABLE table_A TO table_A_bak, table_B TO table_B_bak;
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```
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## RENAME DICTIONARY {#rename_dictionary}
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重命名一个或多个词典。 此查询可用于在数据库之间移动字典。
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**语法**
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```sql
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RENAME DICTIONARY [db0.]dict_A TO [db1.]dict_B [,...] [ON CLUSTER cluster]
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```
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**参考**
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- [Dictionaries](../../sql-reference/dictionaries/index.md)
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