Class PartitionQueryRequest (3.42.0)

Version 3.42.0

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PartitionQueryRequest(mapping=None, *, ignore_unknown_fields=False, **kwargs)

The request for PartitionQuery][google.spanner.v1.Spanner.PartitionQuery]

Attributes
Name	Description
session	str Required. The session used to create the partitions.
transaction	google.cloud.spanner_v1.types.TransactionSelector Read only snapshot transactions are supported, read/write and single use transactions are not.
sql	str 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, the first operator in the query execution plan must be a distributed union operator. For more information about other conditions, see `Read data in parallel
params	google.protobuf.struct_pb2.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="" +=""> It is an error to execute a SQL statement with unbound parameters.
param_types	MutableMapping[str, google.cloud.spanner_v1.types.Type] 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][google.spanner.v1.PartitionQueryRequest.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][google.spanner.v1.Type] for more information about SQL types.
partition_options	google.cloud.spanner_v1.types.PartitionOptions Additional options that affect how many partitions are created.

Classes

ParamTypesEntry

ParamTypesEntry(mapping=None, *, ignore_unknown_fields=False, **kwargs)

The abstract base class for a message.

Parameters
Name	Description
kwargs	dict Keys and values corresponding to the fields of the message.
mapping	Union[dict, .Message] A dictionary or message to be used to determine the values for this message.
ignore_unknown_fields	Optional(bool) If True, do not raise errors for unknown fields. Only applied if mapping is a mapping type or there are keyword parameters.