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36 lines
1.3 KiB
Markdown
36 lines
1.3 KiB
Markdown
# MySQL interface {#mysql_interface}
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ClickHouse supports MySQL wire protocol. It can be enabled by [mysql_port](../operations/server_settings/settings.md#server_settings-mysql_port) setting in configuration file:
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```xml
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<mysql_port>9004</mysql_port>
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```
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Example of connecting using command-line tool mysql:
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```bash
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$ mysql --protocol tcp -u default -P 9004
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```
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Output if connection succeeded:
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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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For compatibility with all MySQL clients, it is recommended to specify user password with [double SHA1](../operations/settings/settings_users.md#password_double_sha1_hex) in configuration file.
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If user password is specified using [SHA256](../operations/settings/settings_users.md#password_sha256_hex), some clients won't be able to authenticate (mysqljs and old versions of command-line tool mysql).
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Restrictions:
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- prepared queries are not supported
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- some data types are sent as strings
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