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47 lines
1.4 KiB
Markdown
47 lines
1.4 KiB
Markdown
---
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slug: /zh/interfaces/mysql
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sidebar_position: 20
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sidebar_label: MySQL接口
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---
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# MySQL接口 {#mysql-interface}
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ClickHouse支持MySQL wire通讯协议。可以通过在配置文件中设置 [mysql_port](../operations/server-configuration-parameters/settings.md#server_configuration_parameters-mysql_port) 来启用它:
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``` xml
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<mysql_port>9004</mysql_port>
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```
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使用命令行工具 `mysql` 进行连接的示例:
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``` bash
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$ mysql --protocol tcp -u default -P 9004
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```
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如果连接成功，则输出:
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``` text
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Welcome to the MySQL monitor. Commands end with ; or \g.
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Your MySQL connection id is 4
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Server version: 20.2.1.1-ClickHouse
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Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
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Oracle is a registered trademark of Oracle Corporation and/or its
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affiliates. Other names may be trademarks of their respective
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owners.
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Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
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mysql>
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```
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为了与所有MySQL客户端兼容，建议在配置文件中使用 [double SHA1](../operations/settings/settings-users.md#password_double_sha1_hex) 来指定用户密码。
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如果使用 [SHA256](../operations/settings/settings-users.md#password_sha256_hex) 指定用户密码，一些客户端将无法进行身份验证（比如mysqljs和旧版本的命令行工具mysql）。
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限制:
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- 不支持prepared queries
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- 某些数据类型以字符串形式发送
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