# Update

This type is used in the examples on this page.

```go
type User struct {
    ID       int `gosql:"primary"`
    Email    string
    IsActive bool
}
```

After changing a value, you can update it in the database.

```go
var user User
db.Select("*").Get(&user)
user.Email = "somenewemail@example.com"
db.Update(&user)
```

{% hint style="info" %}
Your value must have the primary key set (ie, not the zero value).
{% endhint %}


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