Class PartitionQueryRequest (3.41.0) 

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

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

Attributes

NameDescription
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
NameDescription
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.