2021-08-27 11:32:21 +00:00
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---
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2022-04-10 23:08:18 +00:00
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sidebar_position: 49
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sidebar_label: EXCHANGE
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2021-08-27 11:32:21 +00:00
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---
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# EXCHANGE语法 {#exchange}
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以原子方式交换两个表或字典的名称。
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此任务也可以通过使用[RENAME](./rename.md)来完成，但在这种情况下操作不是原子的。
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!!! note "注意"
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`EXCHANGE`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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EXCHANGE TABLES|DICTIONARIES [db0.]name_A AND [db1.]name_B
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```
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## EXCHANGE TABLES {#exchange_tables}
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交换两个表的名称。
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**语法**
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```sql
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EXCHANGE TABLES [db0.]table_A AND [db1.]table_B
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```
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## EXCHANGE DICTIONARIES {#exchange_dictionaries}
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交换两个字典的名称。
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**语法**
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```sql
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EXCHANGE DICTIONARIES [db0.]dict_A AND [db1.]dict_B
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```
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**参考**
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- [Dictionaries](../../sql-reference/dictionaries/index.md)
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