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

# Build a Go App with CockroachDB and GORM

export const InternalLink = ({version, path = "", children, ...props}) => {
  let detectedVersion = version || "stable";
  if (typeof window !== 'undefined' && !version) {
    const match = window.location.pathname.match(/\/docs\/([^/]+)/);
    if (match) {
      detectedVersion = match[1];
    }
  }
  const normalizedPath = path.startsWith("/") ? path.slice(1) : path;
  return <a href={`/docs/${detectedVersion}/${normalizedPath}`} {...props}>
      {children}
    </a>;
};

export const InternalLink = ({version, path = "", children, ...props}) => {
  let detectedVersion = version || "stable";
  if (typeof window !== 'undefined' && !version) {
    const match = window.location.pathname.match(/\/docs\/([^/]+)/);
    if (match) {
      detectedVersion = match[1];
    }
  }
  const normalizedPath = path.startsWith("/") ? path.slice(1) : path;
  return <a href={`/docs/${detectedVersion}/${normalizedPath}`} {...props}>
      {children}
    </a>;
};

This tutorial shows you how build a simple CRUD Go application with CockroachDB and the [GORM ORM](https://gorm.io/).

<Tip>
  For another use of GORM with CockroachDB, see our [`examples-orms`](https://github.com/cockroachdb/examples-orms) repository.
</Tip>

## Step 1. Start CockroachDB

<Tabs>
  <Tab title="Use CockroachDB Cloud">
    ### Choose your installation method

    You can create a CockroachDB Basic cluster using either the CockroachDB Cloud Console, a web-based graphical user interface (GUI) tool, or `ccloud`, a command-line interface (CLI) tool.

    <Tabs>
      <Tab title="Cloud Console (GUI)">
        ### Create a free cluster

        <Note>
          Organizations without billing information on file can only create one CockroachDB Basic cluster.
        </Note>

        1. If you haven't already, [sign up for a CockroachDB Cloud account](https://cockroachlabs.cloud/signup?referralId=docs_go_gorm).
        2. [Log in](https://cockroachlabs.cloud/) to your CockroachDB Cloud account.
        3. On the **Clusters** page, click **Create cluster**.
        4. On the **Select a plan** page, select **Basic**.
        5. On the **Cloud & Regions** page, select a cloud provider (GCP or AWS) in the **Cloud provider** section.
        6. In the **Regions** section, select a region for the cluster. Refer to <InternalLink version="cockroachcloud" path="regions">CockroachDB Cloud Regions</InternalLink> for the regions where CockroachDB Basic clusters can be deployed. To create a multi-region cluster, click **Add region** and select additional regions.
        7. Click **Next: Capacity**.
        8. On the **Capacity** page, select **Start for free**. Click **Next: Finalize**.
        9. On the **Finalize** page, click **Create cluster**.

           Your cluster will be created in a few seconds and the **Create SQL user** dialog will display.

        ### Create a SQL user

        The **Create SQL user** dialog allows you to create a new SQL user and password.

        1. Enter a username in the **SQL user** field or use the one provided by default.
        2. Click **Generate & save password**.
        3. Copy the generated password and save it in a secure location.
        4. Click **Next**.

           Currently, all new SQL users are created with admin privileges. For more information and to change the default settings, see <InternalLink version="cockroachcloud" path="managing-access#manage-sql-users-on-a-cluster">Manage SQL users on a cluster</InternalLink>.

        ### Get the connection string

        The **Connect to cluster** dialog shows information about how to connect to your cluster.

        1. Select **General connection string** from the **Select option** dropdown.
        2. Open the **General connection string** section, then copy the connection string provided and save it in a secure location.

           The sample application used in this tutorial uses system CA certificates for server certificate verification, so you can skip the **Download CA Cert** instructions.

        <Note>
          The connection string is pre-populated with your username, password, cluster name, and other details. Your password, in particular, will be provided *only once*. Save it in a secure place (Cockroach Labs recommends a password manager) to connect to your cluster in the future. If you forget your password, you can reset it by going to the **SQL Users** page for the cluster, found at `https://cockroachlabs.cloud/cluster/<CLUSTER ID>/users`.
        </Note>
      </Tab>

      <Tab title="ccloud CLI">
        Follow these steps to create a CockroachDB Basic cluster using the `ccloud` CLI tool.

        <Note>
          The `ccloud` CLI tool is in Preview.
        </Note>

        ### Install `ccloud`

        <Tabs>
          <Tab title="Mac">
            You can install `ccloud` using either Homebrew or by downloading the binary.

            #### Use Homebrew

            1. [Install Homebrew](http://brew.sh/).
            2. Install using the `ccloud` tap:

               ```shell theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
               brew install cockroachdb/tap/ccloud
               ```

            #### Download the binary

            In a terminal, enter the following command to download and extract the `ccloud` binary and add it to your `PATH`:

            ```shell theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
            curl https://binaries.cockroachdb.com/ccloud/ccloud_darwin-amd64_.tar.gz | tar -xJ && cp -i ccloud /usr/local/bin/
            ```

            Use the ARM 64 binary if you have an M-series Mac:

            ```shell theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
            curl https://binaries.cockroachdb.com/ccloud/ccloud_darwin-arm64_.tar.gz | tar -xJ && cp -i ccloud /usr/local/bin/
            ```
          </Tab>

          <Tab title="Linux">
            In a terminal, enter the following command to download and extract the `ccloud` binary and add it to your `PATH`:

            ```shell theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
            curl https://binaries.cockroachdb.com/ccloud/ccloud_linux-amd64_.tar.gz | tar -xz && cp -i ccloud /usr/local/bin/
            ```
          </Tab>

          <Tab title="Windows">
            In a PowerShell window, enter the following command to download and extract the `ccloud` binary and add it to your `PATH`:

            ```shell theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
            $ErrorActionPreference = "Stop"; [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $ProgressPreference = 'SilentlyContinue'; $null = New-Item -Type Directory -Force $env:appdata/ccloud; Invoke-WebRequest -Uri https://binaries.cockroachdb.com/ccloud/ccloud_windows-amd64_.zip -OutFile ccloud.zip; Expand-Archive -Force -Path ccloud.zip; Copy-Item -Force ccloud/ccloud.exe -Destination $env:appdata/ccloud; $Env:PATH += ";$env:appdata/ccloud"; # We recommend adding ";$env:appdata/ccloud" to the Path variable for your system environment. See https://docs.microsoft.com/powershell/module/microsoft.powershell.core/about/about_environment_variables#saving-changes-to-environment-variables for more information.
            ```
          </Tab>
        </Tabs>

        ### Run `ccloud quickstart` to create a new cluster, create a SQL user, and retrieve the connection string.

        The easiest way of getting started with CockroachDB Cloud is to use `ccloud quickstart`. The `ccloud quickstart` command guides you through logging in to CockroachDB Cloud, creating a new CockroachDB Basic cluster, and connecting to the new cluster. Run `ccloud quickstart` and follow the instructions:

        ```shell theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
        ccloud quickstart
        ```

        The `ccloud quickstart` command will open a browser window to log you in to CockroachDB Cloud. If you are new to CockroachDB Cloud, you can register using one of the single sign-on (SSO) options, or create a new account using an email address.

        The `ccloud quickstart` command will prompt you for the cluster name, cloud provider, and cloud provider region, then ask if you want to connect to the cluster. Each prompt has default values that you can select, or change if you want a different option.

        Select **General connection string**, then copy the connection string displayed and save it in a secure location. The connection string is the line starting `postgresql://`.

        ```
        ? How would you like to connect? General connection string
        Retrieving cluster info: succeeded
         Downloading cluster cert to /Users/maxroach/.postgresql/root.crt: succeeded
        postgresql://maxroach:ThisIsNotAGoodPassword@blue-dog-147.6wr.cockroachlabs.cloud:26257/defaultdb?sslmode=verify-full&sslrootcert=%2FUsers%2Fmaxroach%2F.postgresql%2Froot.crt
        ```
      </Tab>
    </Tabs>
  </Tab>

  <Tab title="Use a Local Cluster">
    1. If you haven't already, <InternalLink path="install-cockroachdb">download the CockroachDB binary</InternalLink>.
    2. Run the <InternalLink path="cockroach-start-single-node">`cockroach start-single-node`</InternalLink> command:

       ```shell theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
       $ cockroach start-single-node --advertise-addr 'localhost' --insecure
       ```

       This starts an insecure, single-node cluster.
    3. Take note of the following connection information in the SQL shell welcome text:

       ```
       CockroachDB node starting at 2021-08-30 17:25:30.06524 +0000 UTC (took 4.3s)
       build:               CCL v21.1.6 @ 2021/07/20 15:33:43 (go1.15.11)
       webui:               http://localhost:8080
       sql:                 postgresql://root@localhost:26257?sslmode=disable
       ```

       You'll use the `sql` connection string to connect to the cluster later in this tutorial.

    <Danger>
      The `--insecure` flag used in this tutorial is intended for non-production testing only. To run CockroachDB in production, use a secure cluster instead.
    </Danger>
  </Tab>
</Tabs>

## Step 2. Get the code

Clone the code's GitHub repo:

```shell theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
$ git clone https://github.com/cockroachlabs/example-app-go-gorm
```

The project has the following directory structure:

```text theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
├── README.md
└── main.go
```

The `main.go` file defines an `Account` struct that maps to a new `accounts` table. The file also contains some read and write database operations that are executed in the `main` method of the program.

```go theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
package main

    "context"
    "fmt"
    "log"
    "math/rand"
    "os"
    "time"

    "github.com/cockroachdb/cockroach-go/v2/crdb/crdbgorm"
    "github.com/google/uuid"
    "gorm.io/driver/postgres"
    "gorm.io/gorm"
)

// Account is our model, which corresponds to the "accounts" table
type Account struct {
    ID      uuid.UUID `gorm:"type:uuid;default:uuid_generate_v4()"`
    Balance int
}

// The `acctIDs` global variable tracks the random IDs generated by `addAccounts`
var acctIDs []uuid.UUID

// Insert new rows into the "accounts" table
// This function generates new UUIDs and random balances for each row, and
// then it appends the ID to the `acctIDs`, which other functions use to track the IDs
func addAccounts(db *gorm.DB, numRows int, transferAmount int) error {
    log.Printf("Creating %d new accounts...", numRows)
    for i := 0; i < numRows; i++ {
        newID := uuid.New()
        newBalance := rand.Intn(10000) + transferAmount
        if err := db.Create(&Account{ID: newID, Balance: newBalance}).Error; err != nil {
            return err
        }
        acctIDs = append(acctIDs, newID)
    }
    log.Println("Accounts created.")
    return nil
}

// Transfer funds between accounts
// This function adds `amount` to the "balance" column of the row with the "id" column matching `toID`,
// and removes `amount` from the "balance" column of the row with the "id" column matching `fromID`
func transferFunds(db *gorm.DB, fromID uuid.UUID, toID uuid.UUID, amount int) error {
    log.Printf("Transferring %d from account %s to account %s...", amount, fromID, toID)
    var fromAccount Account
    var toAccount Account

    db.First(&fromAccount, fromID)
    db.First(&toAccount, toID)

    if fromAccount.Balance < amount {
        return fmt.Errorf("account %s balance %d is lower than transfer amount %d", fromAccount.ID, fromAccount.Balance, amount)
    }

    fromAccount.Balance -= amount
    toAccount.Balance += amount

    if err := db.Save(&fromAccount).Error; err != nil {
        return err
    }
    if err := db.Save(&toAccount).Error; err != nil {
        return err
    }
    log.Println("Funds transferred.")
    return nil
}

// Print IDs and balances for all rows in "accounts" table
func printBalances(db *gorm.DB) {
    var accounts []Account
    db.Find(&accounts)
    fmt.Printf("Balance at '%s':\n", time.Now())
    for _, account := range accounts {
        fmt.Printf("%s %d\n", account.ID, account.Balance)
    }
}

// Delete all rows in "accounts" table inserted by `main` (i.e., tracked by `acctIDs`)
func deleteAccounts(db *gorm.DB, accountIDs []uuid.UUID) error {
    log.Println("Deleting accounts created...")
    err := db.Where("id IN ?", accountIDs).Delete(Account{}).Error
    if err != nil {
        return err
    }
    log.Println("Accounts deleted.")
    return nil
}

func main() {

    db, err := gorm.Open(postgres.Open(os.Getenv("DATABASE_URL")+"&application_name=$ docs_simplecrud_gorm"), &gorm.Config{})
    if err != nil {
        log.Fatal(err)
    }

    // Automatically create the "accounts" table based on the `Account`
    // model.
    db.AutoMigrate(&Account{})

    // The number of initial rows to insert
    const numAccts int = 5

    // The amount to be transferred between two accounts.
    const transferAmt int = 100

    // Insert `numAccts` rows into the "accounts" table.
    // To handle potential transaction retry errors, we wrap the call
    // to `addAccounts` in `crdbgorm.ExecuteTx`, a helper function for
    // GORM which implements a retry loop
    if err := crdbgorm.ExecuteTx(context.Background(), db, nil,
        func(tx *gorm.DB) error {
            return addAccounts(db, numAccts, transferAmt)
        },
    ); err != nil {
        // For information and reference documentation, see:
        //   https://www.cockroachlabs.com/docs/stable/error-handling-and-troubleshooting.html
        fmt.Println(err)
    }

    // Print balances before transfer.
    printBalances(db)

    // Select two account IDs
    fromID := acctIDs[0]
    toID := acctIDs[0:][rand.Intn(len(acctIDs))]

    // Transfer funds between accounts.  To handle potential
    // transaction retry errors, we wrap the call to `transferFunds`
    // in `crdbgorm.ExecuteTx`
    if err := crdbgorm.ExecuteTx(context.Background(), db, nil,
        func(tx *gorm.DB) error {
            return transferFunds(tx, fromID, toID, transferAmt)
        },
    ); err != nil {
        // For information and reference documentation, see:
        //   https://www.cockroachlabs.com/docs/stable/error-handling-and-troubleshooting.html
        fmt.Println(err)
    }

    // Print balances after transfer to ensure that it worked.
    printBalances(db)

    // Delete all accounts created by the earlier call to `addAccounts`
    // To handle potential transaction retry errors, we wrap the call
    // to `deleteAccounts` in `crdbgorm.ExecuteTx`
    if err := crdbgorm.ExecuteTx(context.Background(), db, nil,
        func(tx *gorm.DB) error {
            return deleteAccounts(db, acctIDs)
        },
    ); err != nil {
        // For information and reference documentation, see:
        //   https://www.cockroachlabs.com/docs/stable/error-handling-and-troubleshooting.html
        fmt.Println(err)
    }
}
```

<Note>
  CockroachDB may require the <InternalLink path="transactions#transaction-retries">client to retry a transaction</InternalLink> in the case of read/write <InternalLink path="performance-best-practices-overview#transaction-contention">contention</InternalLink>. The [CockroachDB Go client](https://github.com/cockroachdb/cockroach-go) includes a generic **retry function** (`ExecuteTx()`) that runs inside a transaction and retries it as needed. The code sample shows how you can use this function to wrap SQL statements.
</Note>

## Step 3. Initialize the database

1. Navigate to the `example-app-go-gorm` directory:

   ```shell theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
   $ cd example-app-go-gorm
   ```

2. Set the `DATABASE_URL` environment variable to the connection string for your cluster:

   ```shell theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
   export DATABASE_URL="{connection-string}"
   ```

   Where <code>{'{connection-string}'}</code> is the connection string you copied earlier.

3. If you haven't already, <InternalLink path="install-cockroachdb">download the CockroachDB binary</InternalLink>.

4. Run the <InternalLink path="cockroach-start-single-node">`cockroach start-single-node`</InternalLink> command:

   ```shell theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
   $ cockroach start-single-node --advertise-addr 'localhost' --insecure
   ```

   This starts an insecure, single-node cluster.

5. Take note of the following connection information in the SQL shell welcome text:

   ```text theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
   CockroachDB node starting at 2021-08-30 17:25:30.06524 +0000 UTC (took 4.3s)
   build:               CCL v21.1.6 @ 2021/07/20 15:33:43 (go1.15.11)
   webui:               http://localhost:8080
   sql:                 postgresql://root@localhost:26257?sslmode=disable
   ```

   You'll use the `sql` connection string to connect to the cluster later in this tutorial.

<Danger>
  The `--insecure` flag used in this tutorial is intended for non-production testing only. To run CockroachDB in production, use a secure cluster instead.
</Danger>

## Step 2. Get the code

Clone the code's GitHub repo:

```shell theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
$ git clone https://github.com/cockroachlabs/example-app-go-gorm
```

The project has the following directory structure:

```text theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
├── README.md
└── main.go
```

The `main.go` file defines an `Account` struct that maps to a new `accounts` table. The file also contains some read and write database operations that are executed in the `main` method of the program.

```go theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
package main

    "context"
    "fmt"
    "log"
    "math/rand"
    "os"
    "time"

    "github.com/cockroachdb/cockroach-go/v2/crdb/crdbgorm"
    "github.com/google/uuid"
    "gorm.io/driver/postgres"
    "gorm.io/gorm"
)

// Account is our model, which corresponds to the "accounts" table
type Account struct {
    ID      uuid.UUID `gorm:"type:uuid;default:uuid_generate_v4()"`
    Balance int
}

// The `acctIDs` global variable tracks the random IDs generated by `addAccounts`
var acctIDs []uuid.UUID

// Insert new rows into the "accounts" table
// This function generates new UUIDs and random balances for each row, and
// then it appends the ID to the `acctIDs`, which other functions use to track the IDs
func addAccounts(db *gorm.DB, numRows int, transferAmount int) error {
    log.Printf("Creating %d new accounts...", numRows)
    for i := 0; i < numRows; i++ {
        newID := uuid.New()
        newBalance := rand.Intn(10000) + transferAmount
        if err := db.Create(&Account{ID: newID, Balance: newBalance}).Error; err != nil {
            return err
        }
        acctIDs = append(acctIDs, newID)
    }
    log.Println("Accounts created.")
    return nil
}

// Transfer funds between accounts
// This function adds `amount` to the "balance" column of the row with the "id" column matching `toID`,
// and removes `amount` from the "balance" column of the row with the "id" column matching `fromID`
func transferFunds(db *gorm.DB, fromID uuid.UUID, toID uuid.UUID, amount int) error {
    log.Printf("Transferring %d from account %s to account %s...", amount, fromID, toID)
    var fromAccount Account
    var toAccount Account

    db.First(&fromAccount, fromID)
    db.First(&toAccount, toID)

    if fromAccount.Balance < amount {
        return fmt.Errorf("account %s balance %d is lower than transfer amount %d", fromAccount.ID, fromAccount.Balance, amount)
    }

    fromAccount.Balance -= amount
    toAccount.Balance += amount

    if err := db.Save(&fromAccount).Error; err != nil {
        return err
    }
    if err := db.Save(&toAccount).Error; err != nil {
        return err
    }
    log.Println("Funds transferred.")
    return nil
}

// Print IDs and balances for all rows in "accounts" table
func printBalances(db *gorm.DB) {
    var accounts []Account
    db.Find(&accounts)
    fmt.Printf("Balance at '%s':\n", time.Now())
    for _, account := range accounts {
        fmt.Printf("%s %d\n", account.ID, account.Balance)
    }
}

// Delete all rows in "accounts" table inserted by `main` (i.e., tracked by `acctIDs`)
func deleteAccounts(db *gorm.DB, accountIDs []uuid.UUID) error {
    log.Println("Deleting accounts created...")
    err := db.Where("id IN ?", accountIDs).Delete(Account{}).Error
    if err != nil {
        return err
    }
    log.Println("Accounts deleted.")
    return nil
}

func main() {

    db, err := gorm.Open(postgres.Open(os.Getenv("DATABASE_URL")+"&application_name=$ docs_simplecrud_gorm"), &gorm.Config{})
    if err != nil {
        log.Fatal(err)
    }

    // Automatically create the "accounts" table based on the `Account`
    // model.
    db.AutoMigrate(&Account{})

    // The number of initial rows to insert
    const numAccts int = 5

    // The amount to be transferred between two accounts.
    const transferAmt int = 100

    // Insert `numAccts` rows into the "accounts" table.
    // To handle potential transaction retry errors, we wrap the call
    // to `addAccounts` in `crdbgorm.ExecuteTx`, a helper function for
    // GORM which implements a retry loop
    if err := crdbgorm.ExecuteTx(context.Background(), db, nil,
        func(tx *gorm.DB) error {
            return addAccounts(db, numAccts, transferAmt)
        },
    ); err != nil {
        // For information and reference documentation, see:
        //   https://www.cockroachlabs.com/docs/stable/error-handling-and-troubleshooting.html
        fmt.Println(err)
    }

    // Print balances before transfer.
    printBalances(db)

    // Select two account IDs
    fromID := acctIDs[0]
    toID := acctIDs[0:][rand.Intn(len(acctIDs))]

    // Transfer funds between accounts.  To handle potential
    // transaction retry errors, we wrap the call to `transferFunds`
    // in `crdbgorm.ExecuteTx`
    if err := crdbgorm.ExecuteTx(context.Background(), db, nil,
        func(tx *gorm.DB) error {
            return transferFunds(tx, fromID, toID, transferAmt)
        },
    ); err != nil {
        // For information and reference documentation, see:
        //   https://www.cockroachlabs.com/docs/stable/error-handling-and-troubleshooting.html
        fmt.Println(err)
    }

    // Print balances after transfer to ensure that it worked.
    printBalances(db)

    // Delete all accounts created by the earlier call to `addAccounts`
    // To handle potential transaction retry errors, we wrap the call
    // to `deleteAccounts` in `crdbgorm.ExecuteTx`
    if err := crdbgorm.ExecuteTx(context.Background(), db, nil,
        func(tx *gorm.DB) error {
            return deleteAccounts(db, acctIDs)
        },
    ); err != nil {
        // For information and reference documentation, see:
        //   https://www.cockroachlabs.com/docs/stable/error-handling-and-troubleshooting.html
        fmt.Println(err)
    }
}
```

CockroachDB may require the <InternalLink path="transactions#transaction-retries">client to retry a transaction</InternalLink> in the case of read/write <InternalLink path="performance-best-practices-overview#transaction-contention">contention</InternalLink>. The [CockroachDB Go client](https://github.com/cockroachdb/cockroach-go) includes a generic **retry function** (`ExecuteTx()`) that runs inside a transaction and retries it as needed. The code sample shows how you can use this function to wrap SQL statements.

## Step 3. Initialize the database

1. Navigate to the `example-app-go-gorm` directory:

   ```shell theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
   $ cd example-app-go-gorm
   ```
2. Set the `DATABASE_URL` environment variable to the connection string for your cluster:

   ```shell theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
   export DATABASE_URL="postgresql://root@localhost:26257/defaultdb?sslmode=disable"
   ```

## Step 4. Run the code

1. Initialize the module:

   ```shell theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
   $ cd example-app-go-gorm
   ```

   ```shell theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
   $ go mod init basic-sample && go mod tidy
   ```
2. Run the code:

   ```shell theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
   $ go run main.go
   ```

   The output should look similar to the following:

   ```text theme={"theme":{"light":"catppuccin-mocha","dark":"catppuccin-mocha"}}
   2021/09/16 14:17:12 Creating 5 new accounts...
   2021/09/16 14:17:12 Accounts created.
   Balance at '2021-09-16 14:17:12.68843 -0400 EDT m=+2.760587790':
   1580d2f4-c9ec-4f26-bbe7-6a53e9aa5170 1947
   26ddc77b-8068-409b-b305-0c5d873f7c43 7987
   3d97ea5a-5108-4388-88e8-92524d5de5e8 4159
   af49831d-d637-4a20-a9a7-01e9fe4628fe 8181
   f0cc97ef-e3fe-4abb-a44a-0dd04207f7d4 2181
   2021/09/16 14:17:12 Transferring 100 from account af49831d-d637-4a20-a9a7-01e9fe4628fe to account 3d97ea5a-5108-4388-88e8-92524d5de5e8...
   2021/09/16 14:17:12 Funds transferred.
   Balance at '2021-09-16 14:17:12.759686 -0400 EDT m=+2.831841311':
   1580d2f4-c9ec-4f26-bbe7-6a53e9aa5170 1947
   26ddc77b-8068-409b-b305-0c5d873f7c43 7987
   3d97ea5a-5108-4388-88e8-92524d5de5e8 4259
   af49831d-d637-4a20-a9a7-01e9fe4628fe 8081
   f0cc97ef-e3fe-4abb-a44a-0dd04207f7d4 2181
   2021/09/16 14:17:12 Deleting accounts created...
   2021/09/16 14:17:12 Accounts deleted.
   ```

   The code runs a migration that creates the `accounts` table in the `bank` database, based on the `Account` struct defined at the top of the `main.go` file.

   As shown in the output, the code also does the following:

   * Inserts some rows into the `accounts` table.
   * Reads values from the table.
   * Updates values in the table.
   * Deletes values from the table.

## What's next?

Read more about using the [GORM ORM](http://gorm.io/), or check out a more realistic implementation of GORM with CockroachDB in our [`examples-orms`](https://github.com/cockroachdb/examples-orms) repository.

You might also be interested in the following pages:

* [Client Connection Parameters](connection-parameters)
* [Connection Pooling](connection-pooling)
* [Data Replication](demo-replication-and-rebalancing)
* [CockroachDB Resilience](demo-cockroachdb-resilience)
* [Replication & Rebalancing](demo-replication-and-rebalancing)
* [Cross-Cloud Migration](demo-automatic-cloud-migration)
* [Automated Operations](orchestrate-a-local-cluster-with-kubernetes-insecure)