## Query D1 Database

`client.d1.database.query(stringdatabaseId, DatabaseQueryParamsparams, RequestOptionsoptions?): SinglePage<QueryResult>`

**post** `/accounts/{account_id}/d1/database/{database_id}/query`

Returns the query result as an object.

### Parameters

- `databaseId: string`

  D1 database identifier (UUID).

- `DatabaseQueryParams = D1SingleQuery | MultipleQueries`

  - `DatabaseQueryParamsBase`

  - `D1SingleQuery extends DatabaseQueryParamsBase`

  - `MultipleQueries extends DatabaseQueryParamsBase`

### Returns

- `QueryResult`

  - `meta?: Meta`

    - `changed_db?: boolean`

      Denotes if the database has been altered in some way, like deleting rows.

    - `changes?: number`

      Rough indication of how many rows were modified by the query, as provided by SQLite's `sqlite3_total_changes()`.

    - `duration?: number`

      The duration of the SQL query execution inside the database. Does not include any network communication.

    - `last_row_id?: number`

      The row ID of the last inserted row in a table with an `INTEGER PRIMARY KEY` as provided by SQLite. Tables created with `WITHOUT ROWID` do not populate this.

    - `rows_read?: number`

      Number of rows read during the SQL query execution, including indices (not all rows are necessarily returned).

    - `rows_written?: number`

      Number of rows written during the SQL query execution, including indices.

    - `served_by_colo?: string`

      The three letters airport code of the colo that handled the query.

    - `served_by_primary?: boolean`

      Denotes if the query has been handled by the database primary instance.

    - `served_by_region?: "WNAM" | "ENAM" | "WEUR" | 3 more`

      Region location hint of the database instance that handled the query.

      - `"WNAM"`

      - `"ENAM"`

      - `"WEUR"`

      - `"EEUR"`

      - `"APAC"`

      - `"OC"`

    - `size_after?: number`

      Size of the database after the query committed, in bytes.

    - `timings?: Timings`

      Various durations for the query.

      - `sql_duration_ms?: number`

        The duration of the SQL query execution inside the database. Does not include any network communication.

  - `results?: Array<unknown>`

  - `success?: boolean`

### Example

```node
import Cloudflare from 'cloudflare';

const client = new Cloudflare({
  apiToken: process.env['CLOUDFLARE_API_TOKEN'], // This is the default and can be omitted
});

// Automatically fetches more pages as needed.
for await (const queryResult of client.d1.database.query('xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx', {
  account_id: '023e105f4ecef8ad9ca31a8372d0c353',
  sql: 'SELECT * FROM myTable WHERE field = ? OR field = ?;',
})) {
  console.log(queryResult.meta);
}
```

#### Response

```json
{
  "errors": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "messages": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "result": [
    {
      "meta": {
        "changed_db": true,
        "changes": 0,
        "duration": 0,
        "last_row_id": 0,
        "rows_read": 0,
        "rows_written": 0,
        "served_by_colo": "LHR",
        "served_by_primary": true,
        "served_by_region": "EEUR",
        "size_after": 0,
        "timings": {
          "sql_duration_ms": 0
        }
      },
      "results": [
        {}
      ],
      "success": true
    }
  ],
  "success": true
}
```