Reference documentation and code samples for the Cloud Spanner V1 Client class PartitionQueryRequest.
The request for PartitionQuery
Generated from protobuf message google.spanner.v1.PartitionQueryRequest
Namespace
Google \ Cloud \ Spanner \ V1Methods
__construct
Constructor.
| Parameters | |
|---|---|
| Name | Description |
data |
array
Optional. Data for populating the Message object. |
↳ session |
string
Required. The session used to create the partitions. |
↳ transaction |
Google\Cloud\Spanner\V1\TransactionSelector
Read only snapshot transactions are supported, read/write and single use transactions are not. |
↳ sql |
string
Required. The query request to generate partitions for. The request will fail if the query is not root partitionable. For a query to be root partitionable, it needs to satisfy a few conditions. For example, if the query execution plan contains a distributed union operator, then it must be the first operator in the plan. For more information about other conditions, see Read data in parallel. The query request must not contain DML commands, such as INSERT, UPDATE, or DELETE. Use ExecuteStreamingSql with a PartitionedDml transaction for large, partition-friendly DML operations. |
↳ params |
Google\Protobuf\Struct
Parameter names and values that bind to placeholders in the SQL string. A parameter placeholder consists of the |
↳ param_types |
array|Google\Protobuf\Internal\MapField
It is not always possible for Cloud Spanner to infer the right SQL type from a JSON value. For example, values of type |
↳ partition_options |
Google\Cloud\Spanner\V1\PartitionOptions
Additional options that affect how many partitions are created. |
getSession
Required. The session used to create the partitions.
| Returns | |
|---|---|
| Type | Description |
string |
|
setSession
Required. The session used to create the partitions.
| Parameter | |
|---|---|
| Name | Description |
var |
string
|
| Returns | |
|---|---|
| Type | Description |
$this |
|
getTransaction
Read only snapshot transactions are supported, read/write and single use transactions are not.
| Returns | |
|---|---|
| Type | Description |
Google\Cloud\Spanner\V1\TransactionSelector|null |
|
hasTransaction
clearTransaction
setTransaction
Read only snapshot transactions are supported, read/write and single use transactions are not.
| Parameter | |
|---|---|
| Name | Description |
var |
Google\Cloud\Spanner\V1\TransactionSelector
|
| Returns | |
|---|---|
| Type | Description |
$this |
|
getSql
Required. The query request to generate partitions for. The request will fail if the query is not root partitionable. For a query to be root partitionable, it needs to satisfy a few conditions. For example, if the query execution plan contains a distributed union operator, then it must be the first operator in the plan. For more information about other conditions, see Read data in parallel.
The query request must not contain DML commands, such as INSERT, UPDATE, or DELETE. Use ExecuteStreamingSql with a PartitionedDml transaction for large, partition-friendly DML operations.
| Returns | |
|---|---|
| Type | Description |
string |
|
setSql
Required. The query request to generate partitions for. The request will fail if the query is not root partitionable. For a query to be root partitionable, it needs to satisfy a few conditions. For example, if the query execution plan contains a distributed union operator, then it must be the first operator in the plan. For more information about other conditions, see Read data in parallel.
The query request must not contain DML commands, such as INSERT, UPDATE, or DELETE. Use ExecuteStreamingSql with a PartitionedDml transaction for large, partition-friendly DML operations.
| Parameter | |
|---|---|
| Name | Description |
var |
string
|
| Returns | |
|---|---|
| Type | Description |
$this |
|
getParams
Parameter names and values that bind to placeholders in the SQL string.
A parameter placeholder consists of the @ character followed by the
parameter name (for example, @firstName). Parameter names can contain
letters, numbers, and underscores.
Parameters can appear anywhere that a literal value is expected. The same
parameter name can be used more than once, for example:
"WHERE id > @msg_id AND id < @msg_id + 100"
It is an error to execute a SQL statement with unbound parameters.
| Returns | |
|---|---|
| Type | Description |
Google\Protobuf\Struct|null |
|
hasParams
clearParams
setParams
Parameter names and values that bind to placeholders in the SQL string.
A parameter placeholder consists of the @ character followed by the
parameter name (for example, @firstName). Parameter names can contain
letters, numbers, and underscores.
Parameters can appear anywhere that a literal value is expected. The same
parameter name can be used more than once, for example:
"WHERE id > @msg_id AND id < @msg_id + 100"
It is an error to execute a SQL statement with unbound parameters.
| Parameter | |
|---|---|
| Name | Description |
var |
Google\Protobuf\Struct
|
| Returns | |
|---|---|
| Type | Description |
$this |
|
getParamTypes
It is not always possible for Cloud Spanner to infer the right SQL type
from a JSON value. For example, values of type BYTES and values
of type STRING both appear in
params as JSON strings.
In these cases, param_types can be used to specify the exact
SQL type for some or all of the SQL query parameters. See the
definition of Type for more information
about SQL types.
| Returns | |
|---|---|
| Type | Description |
Google\Protobuf\Internal\MapField |
|
setParamTypes
It is not always possible for Cloud Spanner to infer the right SQL type
from a JSON value. For example, values of type BYTES and values
of type STRING both appear in
params as JSON strings.
In these cases, param_types can be used to specify the exact
SQL type for some or all of the SQL query parameters. See the
definition of Type for more information
about SQL types.
| Parameter | |
|---|---|
| Name | Description |
var |
array|Google\Protobuf\Internal\MapField
|
| Returns | |
|---|---|
| Type | Description |
$this |
|
getPartitionOptions
Additional options that affect how many partitions are created.
| Returns | |
|---|---|
| Type | Description |
Google\Cloud\Spanner\V1\PartitionOptions|null |
|
hasPartitionOptions
clearPartitionOptions
setPartitionOptions
Additional options that affect how many partitions are created.
| Parameter | |
|---|---|
| Name | Description |
var |
Google\Cloud\Spanner\V1\PartitionOptions
|
| Returns | |
|---|---|
| Type | Description |
$this |
|