Reference documentation and code samples for the Cloud Datastore V1 Client class Count.
Count of entities that match the query.
The COUNT(*) aggregation function operates on the entire entity
so it does not require a field reference.
Generated from protobuf message google.datastore.v1.AggregationQuery.Aggregation.Count
Methods
__construct
Constructor.
| Parameters | |
|---|---|
| Name | Description |
data |
array
Optional. Data for populating the Message object. |
↳ up_to |
Google\Protobuf\Int64Value
Optional. Optional constraint on the maximum number of entities to count. This provides a way to set an upper bound on the number of entities to scan, limiting latency and cost. Unspecified is interpreted as no bound. If a zero value is provided, a count result of zero should always be expected. High-Level Example: |
getUpTo
Optional. Optional constraint on the maximum number of entities to count.
This provides a way to set an upper bound on the number of entities to scan, limiting latency and cost. Unspecified is interpreted as no bound. If a zero value is provided, a count result of zero should always be expected. High-Level Example:
AGGREGATE COUNT_UP_TO(1000) OVER ( SELECT * FROM k );
Requires:
- Must be non-negative when present.
| Returns | |
|---|---|
| Type | Description |
Google\Protobuf\Int64Value|null | |
hasUpTo
clearUpTo
getUpToValue
Returns the unboxed value from getUpTo()
Optional. Optional constraint on the maximum number of entities to count. This provides a way to set an upper bound on the number of entities to scan, limiting latency and cost. Unspecified is interpreted as no bound. If a zero value is provided, a count result of zero should always be expected. High-Level Example:
AGGREGATE COUNT_UP_TO(1000) OVER ( SELECT * FROM k );
Requires:
- Must be non-negative when present.
| Returns | |
|---|---|
| Type | Description |
int|string|null | |
setUpTo
Optional. Optional constraint on the maximum number of entities to count.
This provides a way to set an upper bound on the number of entities to scan, limiting latency and cost. Unspecified is interpreted as no bound. If a zero value is provided, a count result of zero should always be expected. High-Level Example:
AGGREGATE COUNT_UP_TO(1000) OVER ( SELECT * FROM k );
Requires:
- Must be non-negative when present.
| Parameter | |
|---|---|
| Name | Description |
var |
Google\Protobuf\Int64Value
|
| Returns | |
|---|---|
| Type | Description |
$this | |
setUpToValue
Sets the field by wrapping a primitive type in a Google\Protobuf\Int64Value object.
Optional. Optional constraint on the maximum number of entities to count. This provides a way to set an upper bound on the number of entities to scan, limiting latency and cost. Unspecified is interpreted as no bound. If a zero value is provided, a count result of zero should always be expected. High-Level Example:
AGGREGATE COUNT_UP_TO(1000) OVER ( SELECT * FROM k );
Requires:
- Must be non-negative when present.
| Parameter | |
|---|---|
| Name | Description |
var |
int|string|null
|
| Returns | |
|---|---|
| Type | Description |
$this | |