---
{
    "title": "CREATE DATABASE",
    "language": "zh-CN"
}
---

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# CREATE DATABASE

## Description

    该语句用于新建数据库（database）
    语法：
        CREATE DATABASE [IF NOT EXISTS] db_name
        [PROPERTIES ("key"="value", ...)];

1. PROPERTIES
    该数据库的附加信息，可以缺省。
    1）如果创建 Iceberg 数据库，则需要在 properties 中提供以下信息：
    ```
        PROPERTIES (
            "iceberg.database" = "iceberg_db_name",
            "iceberg.hive.metastore.uris" = "thrift://127.0.0.1:9083",
            "iceberg.catalog.type" = "HIVE_CATALOG"
            )

    ```
    其中 `iceberg.database` 是 Iceberg 对应的库名；  
    `iceberg.hive.metastore.uris` 是 hive metastore 服务地址。  
    `iceberg.catalog.type` 默认为 `HIVE_CATALOG`。当前仅支持 `HIVE_CATALOG`，后续会支持更多 Iceberg catalog 类型。

## example
    1. 新建数据库 db_test
        ```
        CREATE DATABASE db_test;
        ```
        
    2. 新建 Iceberg 数据库 iceberg_test
        ```
        CREATE DATABASE `iceberg_test`
        PROPERTIES (
        "iceberg.database" = "doris",
        "iceberg.hive.metastore.uris" = "thrift://127.0.0.1:9083",
        "iceberg.catalog.type" = "HIVE_CATALOG"
        );
        ```

## keyword
    CREATE,DATABASE