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Datastore query for running an aggregation over a
[Query](https://docs.cloud.google.com/php/docs/reference/cloud-datastore/latest/V1.Query).

Generated from protobuf message `google.datastore.v1.AggregationQuery`

## Namespace

Google \\ Cloud \\ Datastore \\ V1

## Methods

### __construct

Constructor.

| **Parameters** ||
|---|---|
| **Name** | **Description** |
| `data` | `array` Optional. Data for populating the Message object. |
| `↳ nested_query` | `https://docs.cloud.google.com/php/docs/reference/cloud-datastore/latest/V1.Query` Nested query for aggregation |
| `↳ aggregations` | `array<https://docs.cloud.google.com/php/docs/reference/cloud-datastore/latest/V1.AggregationQuery.Aggregation>` Optional. Series of aggregations to apply over the results of the `nested_query`. Requires: \* \* A minimum of one and maximum of five aggregations per query. |

### getNestedQuery

Nested query for aggregation

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/php/docs/reference/cloud-datastore/latest/V1.Query|null` |   |

### hasNestedQuery

### setNestedQuery

Nested query for aggregation

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `var` | `https://docs.cloud.google.com/php/docs/reference/cloud-datastore/latest/V1.Query` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `$this` |   |

### getAggregations

Optional. Series of aggregations to apply over the results of the
`nested_query`.

Requires:

- A minimum of one and maximum of five aggregations per query.

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `Google\Protobuf\RepeatedField<https://docs.cloud.google.com/php/docs/reference/cloud-datastore/latest/V1.AggregationQuery.Aggregation>` |   |

### setAggregations

Optional. Series of aggregations to apply over the results of the
`nested_query`.

Requires:

- A minimum of one and maximum of five aggregations per query.

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `var` | `array<https://docs.cloud.google.com/php/docs/reference/cloud-datastore/latest/V1.AggregationQuery.Aggregation>` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `$this` |   |

### getQueryType

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `string` |   |