mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-14 18:32:29 +00:00
d91c97d15d
* Replace underscores with hyphens * remove temporary code * fix style check * fix collapse
136 lines
4.2 KiB
Markdown
136 lines
4.2 KiB
Markdown
---
|
||
machine_translated: true
|
||
machine_translated_rev: f865c9653f9df092694258e0ccdd733c339112f5
|
||
toc_priority: 30
|
||
toc_title: MySQL
|
||
---
|
||
|
||
# Mysql {#mysql}
|
||
|
||
Permet de se connecter à des bases de données sur un serveur MySQL distant et `INSERT` et `SELECT` requêtes pour échanger des données entre Clickhouse et MySQL.
|
||
|
||
Le `MySQL` moteur de base de données traduire les requêtes sur le serveur MySQL afin que vous puissiez effectuer des opérations telles que `SHOW TABLES` ou `SHOW CREATE TABLE`.
|
||
|
||
Vous ne pouvez pas effectuer les requêtes suivantes:
|
||
|
||
- `RENAME`
|
||
- `CREATE TABLE`
|
||
- `ALTER`
|
||
|
||
## La création d’une Base De données {#creating-a-database}
|
||
|
||
``` sql
|
||
CREATE DATABASE [IF NOT EXISTS] db_name [ON CLUSTER cluster]
|
||
ENGINE = MySQL('host:port', 'database', 'user', 'password')
|
||
```
|
||
|
||
**Les Paramètres Du Moteur**
|
||
|
||
- `host:port` — MySQL server address.
|
||
- `database` — Remote database name.
|
||
- `user` — MySQL user.
|
||
- `password` — User password.
|
||
|
||
## Types De Données Soutien {#data_types-support}
|
||
|
||
| MySQL | ClickHouse |
|
||
|----------------------------------|--------------------------------------------------------------|
|
||
| UNSIGNED TINYINT | [UInt8](../../sql-reference/data-types/int-uint.md) |
|
||
| TINYINT | [Int8](../../sql-reference/data-types/int-uint.md) |
|
||
| UNSIGNED SMALLINT | [UInt16](../../sql-reference/data-types/int-uint.md) |
|
||
| SMALLINT | [Int16](../../sql-reference/data-types/int-uint.md) |
|
||
| UNSIGNED INT, UNSIGNED MEDIUMINT | [UInt32](../../sql-reference/data-types/int-uint.md) |
|
||
| INT, MEDIUMINT | [Int32](../../sql-reference/data-types/int-uint.md) |
|
||
| UNSIGNED BIGINT | [UInt64](../../sql-reference/data-types/int-uint.md) |
|
||
| BIGINT | [Int64](../../sql-reference/data-types/int-uint.md) |
|
||
| FLOAT | [Float32](../../sql-reference/data-types/float.md) |
|
||
| DOUBLE | [Float64](../../sql-reference/data-types/float.md) |
|
||
| DATE | [Date](../../sql-reference/data-types/date.md) |
|
||
| DATETIME, TIMESTAMP | [DateTime](../../sql-reference/data-types/datetime.md) |
|
||
| BINARY | [FixedString](../../sql-reference/data-types/fixedstring.md) |
|
||
|
||
Tous les autres types de données MySQL sont convertis en [Chaîne](../../sql-reference/data-types/string.md).
|
||
|
||
[Nullable](../../sql-reference/data-types/nullable.md) est pris en charge.
|
||
|
||
## Exemples D’Utilisation {#examples-of-use}
|
||
|
||
Table dans MySQL:
|
||
|
||
``` text
|
||
mysql> USE test;
|
||
Database changed
|
||
|
||
mysql> CREATE TABLE `mysql_table` (
|
||
-> `int_id` INT NOT NULL AUTO_INCREMENT,
|
||
-> `float` FLOAT NOT NULL,
|
||
-> PRIMARY KEY (`int_id`));
|
||
Query OK, 0 rows affected (0,09 sec)
|
||
|
||
mysql> insert into mysql_table (`int_id`, `float`) VALUES (1,2);
|
||
Query OK, 1 row affected (0,00 sec)
|
||
|
||
mysql> select * from mysql_table;
|
||
+------+-----+
|
||
| int_id | value |
|
||
+------+-----+
|
||
| 1 | 2 |
|
||
+------+-----+
|
||
1 row in set (0,00 sec)
|
||
```
|
||
|
||
Base de données dans ClickHouse, échange de données avec le serveur MySQL:
|
||
|
||
``` sql
|
||
CREATE DATABASE mysql_db ENGINE = MySQL('localhost:3306', 'test', 'my_user', 'user_password')
|
||
```
|
||
|
||
``` sql
|
||
SHOW DATABASES
|
||
```
|
||
|
||
``` text
|
||
┌─name─────┐
|
||
│ default │
|
||
│ mysql_db │
|
||
│ system │
|
||
└──────────┘
|
||
```
|
||
|
||
``` sql
|
||
SHOW TABLES FROM mysql_db
|
||
```
|
||
|
||
``` text
|
||
┌─name─────────┐
|
||
│ mysql_table │
|
||
└──────────────┘
|
||
```
|
||
|
||
``` sql
|
||
SELECT * FROM mysql_db.mysql_table
|
||
```
|
||
|
||
``` text
|
||
┌─int_id─┬─value─┐
|
||
│ 1 │ 2 │
|
||
└────────┴───────┘
|
||
```
|
||
|
||
``` sql
|
||
INSERT INTO mysql_db.mysql_table VALUES (3,4)
|
||
```
|
||
|
||
``` sql
|
||
SELECT * FROM mysql_db.mysql_table
|
||
```
|
||
|
||
``` text
|
||
┌─int_id─┬─value─┐
|
||
│ 1 │ 2 │
|
||
│ 3 │ 4 │
|
||
└────────┴───────┘
|
||
```
|
||
|
||
[Article Original](https://clickhouse.tech/docs/en/database_engines/mysql/) <!--hide-->
|