Class TransactionSelector (2.0.0) 

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

This message is used to select the transaction in which a Read][google.spanner.v1.Spanner.Read] or ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] call runs.

See TransactionOptions][google.spanner.v1.TransactionOptions] for more information about transactions.

Attributes

NameDescription
single_use .transaction.TransactionOptions
Execute the read or SQL query in a temporary transaction. This is the most efficient way to execute a transaction that consists of a single SQL query.
id bytes
Execute the read or SQL query in a previously-started transaction.
begin .transaction.TransactionOptions
Begin a new transaction and execute this read or SQL query in it. The transaction ID of the new transaction is returned in ResultSetMetadata.transaction][google.spanner.v1.ResultSetMetadata.transaction], which is a Transaction][google.spanner.v1.Transaction].