Class BeginTransactionRequest (3.51.0)

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

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

Attributes
Name	Description
session	str Required. The session in which the transaction runs.
options	google.cloud.spanner_v1.types.TransactionOptions Required. Options for the new transaction.
request_options	google.cloud.spanner_v1.types.RequestOptions Common options for this request. Priority is ignored for this request. Setting the priority in this request_options struct will not do anything. To set the priority for a transaction, set it on the reads and writes that are part of this transaction instead.
mutation_key	google.cloud.spanner_v1.types.Mutation Optional. Required for read-write transactions on a multiplexed session that commit mutations but do not perform any reads or queries. Clients should randomly select one of the mutations from the mutation set and send it as a part of this request. This feature is not yet supported and will result in an UNIMPLEMENTED error.