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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
Methods
__construct
Constructor.
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. The query plan of a root partitionable query has a single distributed union operator. A distributed union operator conceptually divides one or more tables into multiple splits, remotely evaluates a subquery independently on each split, and then unions all results. This 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 @
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.
↳ 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 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.
↳ 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.
string
setSession
Required. The session used to create the partitions.
var
string
$this
getTransaction
Read only snapshot transactions are supported, read/write and single use transactions are not.
hasTransaction
clearTransaction
setTransaction
Read only snapshot transactions are supported, read/write and single use transactions are not.
$this
getSql
Required. The query request to generate partitions for. The request will fail if the query is not root partitionable. The query plan of a root partitionable query has a single distributed union operator. A distributed union operator conceptually divides one or more tables into multiple splits, remotely evaluates a subquery independently on each split, and then unions all results.
This must not contain DML commands, such as INSERT, UPDATE, or DELETE. Use ExecuteStreamingSql with a PartitionedDml transaction for large, partition-friendly DML operations.
string
setSql
Required. The query request to generate partitions for. The request will fail if the query is not root partitionable. The query plan of a root partitionable query has a single distributed union operator. A distributed union operator conceptually divides one or more tables into multiple splits, remotely evaluates a subquery independently on each split, and then unions all results.
This must not contain DML commands, such as INSERT, UPDATE, or DELETE. Use ExecuteStreamingSql with a PartitionedDml transaction for large, partition-friendly DML operations.
var
string
$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.
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.
$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.
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.
$this
getPartitionOptions
Additional options that affect how many partitions are created.
hasPartitionOptions
clearPartitionOptions
setPartitionOptions
Additional options that affect how many partitions are created.
$this
