> ## Documentation Index
> Fetch the complete documentation index at: https://private-7c7dfe99-fix-nav-issues.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Integrating MySQL with ClickHouse

> Page describing MySQL integration

export const ExperimentalBadge = () => {
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            Experimental feature. <u><a href="/docs/beta-and-experimental-features#experimental-features">Learn more.</a></u>
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            Not supported in ClickHouse Cloud
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};

This page covers using the `MySQL` table engine, for reading from a MySQL table.

<Note>
  For ClickHouse Cloud, you can also use the [MySQL ClickPipe](/integrations/clickpipes/mysql/index) (currently in public beta) to easily move data from your MySQL tables to ClickHouse.
</Note>

<h2 id="connecting-clickhouse-to-mysql-using-the-mysql-table-engine">
  Connecting ClickHouse to MySQL using the MySQL Table Engine
</h2>

The `MySQL` table engine allows you to connect ClickHouse to MySQL. **SELECT** and **INSERT** statements can be made in either ClickHouse or in the MySQL table. This article illustrates the basic methods of how to use the `MySQL` table engine.

<h3 id="1-configure-mysql">
  1. Configure MySQL
</h3>

1. Create a database in MySQL:

```sql theme={null}
CREATE DATABASE db1;
```

2. Create a table:

```sql theme={null}
CREATE TABLE db1.table1 (
  id INT,
  column1 VARCHAR(255)
);
```

3. Insert sample rows:

```sql theme={null}
INSERT INTO db1.table1
  (id, column1)
VALUES
  (1, 'abc'),
  (2, 'def'),
  (3, 'ghi');
```

4. Create a user to connect from ClickHouse:

```sql theme={null}
CREATE USER 'mysql_clickhouse'@'%' IDENTIFIED BY 'Password123!';
```

5. Grant privileges as needed. (For demonstration purposes, the `mysql_clickhouse` user is granted admin privileges.)

```sql theme={null}
GRANT ALL PRIVILEGES ON *.* TO 'mysql_clickhouse'@'%';
```

<Note>
  If you're using this feature in ClickHouse Cloud, you may need the to allow the ClickHouse Cloud IP addresses to access your MySQL instance.
  Check the ClickHouse [Cloud Endpoints API](/products/cloud/guides/sql-console/query-endpoints) for egress traffic details.
</Note>

<h3 id="2-define-a-table-in-clickhouse">
  2. Define a Table in ClickHouse
</h3>

1. Now let's create a ClickHouse table that uses the `MySQL` table engine:

```sql theme={null}
CREATE TABLE mysql_table1 (
  id UInt64,
  column1 String
)
ENGINE = MySQL('mysql-host.domain.com','db1','table1','mysql_clickhouse','Password123!')
```

The minimum parameters are:

| parameter | Description                  | example               |
| --------- | ---------------------------- | --------------------- |
| host      | hostname or IP               | mysql-host.domain.com |
| database  | mysql database name          | db1                   |
| table     | mysql table name             | table1                |
| user      | username to connect to mysql | mysql\_clickhouse     |
| password  | password to connect to mysql | Password123!          |

<Note>
  View the [MySQL table engine](/reference/engines/table-engines/integrations/mysql) doc page for a complete list of parameters.
</Note>

<h3 id="3-test-the-integration">
  3. Test the Integration
</h3>

1. In MySQL, insert a sample row:

```sql theme={null}
INSERT INTO db1.table1
  (id, column1)
VALUES
  (4, 'jkl');
```

2. Notice the existing rows from the MySQL table are in the ClickHouse table, along with the new row you just added:

```sql theme={null}
SELECT
    id,
    column1
FROM mysql_table1
```

You should see 4 rows:

```response theme={null}
Query id: 6d590083-841e-4e95-8715-ef37d3e95197

┌─id─┬─column1─┐
│  1 │ abc     │
│  2 │ def     │
│  3 │ ghi     │
│  4 │ jkl     │
└────┴─────────┘

4 rows in set. Elapsed: 0.044 sec.
```

3. Let's add a row to the ClickHouse table:

```sql theme={null}
INSERT INTO mysql_table1
  (id, column1)
VALUES
  (5,'mno')
```

4. Notice the new row appears in MySQL:

```bash theme={null}
mysql> select id,column1 from db1.table1;
```

You should see the new row:

```response theme={null}
+------+---------+
| id   | column1 |
+------+---------+
|    1 | abc     |
|    2 | def     |
|    3 | ghi     |
|    4 | jkl     |
|    5 | mno     |
+------+---------+
5 rows in set (0.01 sec)
```

<h3 id="summary">
  Summary
</h3>

The `MySQL` table engine allows you to connect ClickHouse to MySQL to exchange data back and forth. For more details, be sure to check out the documentation page for the [MySQL table engine](/reference/functions/table-functions/mysql).
