mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-28 18:42:26 +00:00
54 lines
1.8 KiB
Markdown
54 lines
1.8 KiB
Markdown
---
|
||
toc_priority: 20
|
||
toc_title: MySQL Interface
|
||
---
|
||
|
||
# MySQL Interface {#mysql-interface}
|
||
|
||
ClickHouse supports MySQL wire protocol. It can be enabled by [mysql_port](../operations/server-configuration-parameters/settings.md#server_configuration_parameters-mysql_port) setting in configuration file:
|
||
|
||
``` xml
|
||
<mysql_port>9004</mysql_port>
|
||
```
|
||
|
||
Example of connecting using command-line tool `mysql`:
|
||
|
||
``` bash
|
||
$ mysql --protocol tcp -u default -P 9004
|
||
```
|
||
|
||
Output if a connection succeeded:
|
||
|
||
``` text
|
||
Welcome to the MySQL monitor. Commands end with ; or \g.
|
||
Your MySQL connection id is 4
|
||
Server version: 20.2.1.1-ClickHouse
|
||
|
||
Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
|
||
|
||
Oracle is a registered trademark of Oracle Corporation and/or its
|
||
affiliates. Other names may be trademarks of their respective
|
||
owners.
|
||
|
||
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
|
||
|
||
mysql>
|
||
```
|
||
|
||
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.
|
||
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).
|
||
|
||
Restrictions:
|
||
|
||
- prepared queries are not supported
|
||
|
||
- some data types are sent as strings
|
||
|
||
To cancel a long query use `KILL QUERY connection_id` statement (it is replaced with `KILL QUERY WHERE query_id = connection_id` while proceeding). For example:
|
||
|
||
``` bash
|
||
$ mysql --protocol tcp -h mysql_server -P 9004 default -u default --password=123 -e "KILL QUERY 123456;"
|
||
```
|
||
|
||
[Original article](https://clickhouse.tech/docs/en/interfaces/mysql/) <!--hide-->
|