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MySQL接口

ClickHouse支持MySQL线协议。 它可以通过启用 mysql_port 在配置文件中设置:

  1. <mysql_port>9004</mysql_port>

使用命令行工具连接的示例 mysql:

  1. $ mysql --protocol tcp -u default -P 9004

如果连接成功，则输出:

  1. Welcome to the MySQL monitor.  Commands end with ; or \g.
  2. Your MySQL connection id is 4
  3. Server version: 20.2.1.1-ClickHouse
  5. Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
  7. Oracle is a registered trademark of Oracle Corporation and/or its
  8. affiliates. Other names may be trademarks of their respective
  9. owners.
  11. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
  13. mysql>

为了与所有MySQL客户端兼容，建议使用以下命令指定用户密码 双SHA1 在配置文件中。
如果使用用户密码指定 SHA256，一些客户端将无法进行身份验证（mysqljs和旧版本的命令行工具mysql）。

限制:

  • 不支持准备好的查询

  • 某些数据类型以字符串形式发送

原始文章