> ## Documentation Index
> Fetch the complete documentation index at: https://docs.mindsdb.com/llms.txt
> Use this file to discover all available pages before exploring further.

# OpenGauss

This is the implementation of the OpenGauss data handler for MindsDB.

[OpenGauss](https://opengauss.org/en/) is an open-source relational database management system released with the Mulan PSL v2 and the kernel built on Huawei's years of experience in the database field. It continuously provides competitive features tailored to enterprise-grade scenarios.

## Prerequisites

Before proceeding, ensure the following prerequisites are met:

1. Install MindsDB locally via [Docker](/setup/self-hosted/docker) or [Docker Desktop](/setup/self-hosted/docker-desktop).
2. To connect OpenGauss to MindsDB, install the required dependencies following [this instruction](/setup/self-hosted/docker#install-dependencies).
3. Install or ensure access to OpenGauss.

## Implementation

This handler is implemented by extending the PostgreSQL data handler.

The required arguments to establish a connection are as follows:

* `user` is the database user.
* `password` is the database password.
* `host` is the host name, IP address, or URL.
* `port` is the port used to make TCP/IP connection.
* `database` is the database name.

## Usage

In order to make use of this handler and connect to the OpenGauss database in MindsDB, the following syntax can be used:

```sql theme={null}
CREATE DATABASE opengauss_datasource
WITH
  ENGINE = 'opengauss',
  PARAMETERS = {
    "host": "127.0.0.1",
    "port": 5432,
    "database": "opengauss",
    "user": "mindsdb",
    "password": "password"
  };
```

You can use this established connection to query your table as follows:

```sql theme={null}
SELECT *
FROM opengauss_datasource.demo_table
LIMIT 10;
```