Connect to TiDB with GORM

TiDB is a MySQL-compatible database, and GORM is a popular open-source ORM framework for Golang. GORM adapts to TiDB features such as AUTO_RANDOM and supports TiDB as a default database option.

In this tutorial, you can learn how to use TiDB and GORM to accomplish the following tasks:

• Set up your environment.
• Connect to your TiDB cluster using GORM.
• Build and run your application. Optionally, you can find sample code snippets for basic CRUD operations.

Prerequisites

To complete this tutorial, you need:

• Go 1.20 or higher.
• Git.
• A TiDB cluster.

If you don't have a TiDB cluster, you can create one as follows:

• (Recommended) Follow Creating a TiDB Serverless cluster to create your own TiDB Cloud cluster.
• Follow Deploy a local test TiDB cluster or Deploy a production TiDB cluster to create a local cluster.

Run the sample app to connect to TiDB

This section demonstrates how to run the sample application code and connect to TiDB.

Step 1: Clone the sample app repository

Run the following commands in your terminal window to clone the sample code repository:

git clone https://github.com/tidb-samples/tidb-golang-gorm-quickstart.git
cd tidb-golang-gorm-quickstart

Step 2: Configure connection information

Connect to your TiDB cluster depending on the TiDB deployment option you've selected.

• TiDB Serverless
• TiDB Dedicated
• TiDB Self-Hosted

Step 3: Run the code and check the result

1. Execute the following command to run the sample code:

   make
   

2. Check the Expected-Output.txt to see if the output matches.

Sample code snippets

You can refer to the following sample code snippets to complete your own application development.

For complete sample code and how to run it, check out the tidb-samples/tidb-golang-gorm-quickstart repository.

Connect to TiDB

func createDB() *gorm.DB {
    dsn := fmt.Sprintf("%s:%s@tcp(%s:%s)/%s?charset=utf8mb4&tls=%s",
        ${tidb_user}, ${tidb_password}, ${tidb_host}, ${tidb_port}, ${tidb_db_name}, ${use_ssl})

    db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{
        Logger: logger.Default.LogMode(logger.Info),
    })
    if err != nil {
        panic(err)
    }

    return db
}

When using this function, you need to replace ${tidb_host}, ${tidb_port}, ${tidb_user}, ${tidb_password}, and ${tidb_db_name} with the actual values of your TiDB cluster. TiDB Serverless requires a secure connection. Therefore, you need to set the value of ${use_ssl} to true.

Insert data

db.Create(&Player{ID: "id", Coins: 1, Goods: 1})

For more information, refer to Insert data.

Query data

var queryPlayer Player
db.Find(&queryPlayer, "id = ?", "id")

For more information, refer to Query data.

Update data

db.Save(&Player{ID: "id", Coins: 100, Goods: 1})

For more information, refer to Update data.

Delete data

db.Delete(&Player{ID: "id"})

For more information, refer to Delete data.

Next steps

• Learn more usage of GORM from the documentation of GORM and the TiDB section in the documentation of GORM.
• Learn the best practices for TiDB application development with the chapters in the Developer guide, such as Insert data, Update data, Delete data, Single table reading, Transactions, and SQL performance optimization.
• Learn through the professional TiDB developer courses and earn TiDB certifications after passing the exam.

Need help?

Ask questions on the Discord, or create a support ticket.