# OrderSortKey

The set of valid sort keys for order listings. This enum defines the available fields by which orders can be sorted in queries.

## Enum Definition

```graphql
enum OrderSortKey {
  CREATED_AT
  UPDATED_AT
  ORDER_NUMBER
}
```

## Values

| Value | Description |
|-------|-------------|
| CREATED_AT | Sort orders by their creation date |
| UPDATED_AT | Sort orders by their last update date |
| ORDER_NUMBER | Sort orders by their order number |

## Example

```graphql
query {
  orders(first: 10, sortKey: CREATED_AT) {
    edges {
      node {
        id
        orderNumber
        createdAt
        updatedAt
      }
    }
  }
}
```

## Related Types

- `Order`
- `OrderConnection`
- `OrderEdge`