mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-14 02:12:21 +00:00
31 lines
1005 B
Markdown
31 lines
1005 B
Markdown
---
|
||
slug: /zh/sql-reference/statements/create/database
|
||
sidebar_position: 35
|
||
sidebar_label: DATABASE
|
||
---
|
||
|
||
# CREATE DATABASE {#query-language-create-database}
|
||
|
||
创建数据库.
|
||
|
||
``` sql
|
||
CREATE DATABASE [IF NOT EXISTS] db_name [ON CLUSTER cluster] [ENGINE = engine(...)]
|
||
```
|
||
|
||
## 条件 {#clauses}
|
||
|
||
### IF NOT EXISTS {#if-not-exists}
|
||
|
||
如果`db_name`数据库已经存在，则ClickHouse不会创建新数据库并且：
|
||
|
||
- 如果指定了子句，则不会引发异常。
|
||
- 如果未指定子句，则抛出异常。
|
||
|
||
### ON CLUSTER {#on-cluster}
|
||
|
||
ClickHouse在指定集群的所有服务器上创建`db_name`数据库。 更多细节在 [Distributed DDL](../../../sql-reference/distributed-ddl.md) article.
|
||
|
||
### ENGINE {#engine}
|
||
|
||
[MySQL](../../../engines/database-engines/mysql.md) 允许您从远程MySQL服务器检索数据. 默认情况下，ClickHouse使用自己的[database engine](../../../engines/database-engines/index.md). 还有一个[lazy](../../../engines/database-engines/lazy.md)引擎.
|