Class PartitionQueryRequest

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

Required. The session used to create the partitions.
Read only snapshot transactions are supported, read/write and single use transactions are not.
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][google.spanner.v1.Spanner.ExecuteStreamingSql]` with a PartitionedDml transaction for large, partition-friendly DML operations.
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="">
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.
Additional options that affect how many partitions are created.


builtins.object > proto.message.Message > PartitionQueryRequest



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

API documentation for spanner_v1.types.PartitionQueryRequest.ParamTypesEntry class.