3.59.0 (2025-10-18)

Features

• spanner: Add lazy decode to partitioned query (#1411) (a09961b)

Bug Fixes

• spanner: Resolve TypeError in metrics resource detection (#1446) (7266686)

Documentation

• Add snippet for Repeatable Read configuration at client and transaction (#1326) (58e2406)

3.58.0 (2025-09-10)

Features

• spanner: Support setting read lock mode (#1404) (ee24c6e)

Dependencies

• Remove Python 3.7 and 3.8 as supported runtimes (#1395) (fc93792)

3.57.0 (2025-08-14)

Features

• Support configuring logger in dbapi kwargs (#1400) (ffa5c9e)

3.56.0 (2025-07-24)

Features

• Add support for multiplexed sessions - read/write (#1389) (ce3f230)
• Add support for multiplexed sessions (#1383) (21f5028)
• Default enable multiplex session for all operations unless explicitly set to false (#1394) (651ca9c)
• spanner: Add new change_stream.proto (#1382) (ca6255e)

Performance Improvements

• Skip gRPC trailers for StreamingRead & ExecuteStreamingSql (#1385) (cb25de4)

3.55.0 (2025-05-28)

Features

• Add a last field in the PartialResultSet (d532d57)
• Add support for multiplexed sessions (#1381) (97d7268)
• Add throughput_mode to UpdateDatabaseDdlRequest to be used by Spanner Migration Tool. See https://github.com/GoogleCloudPlatform/spanner-migration-tool (d532d57)
• Support fine-grained permissions database roles in connect (#1338) (064d9dc)

Bug Fixes

• E2E tracing metadata append issue (#1357) (3943885)
• Pass through kwargs in dbapi connect (#1368) (aae8d61)
• Remove setup.cfg configuration for creating universal wheels (#1324) (e064474)

Documentation

• A comment for field chunked_value in message .google.spanner.v1.PartialResultSet is changed (d532d57)
• A comment for field precommit_token in message .google.spanner.v1.PartialResultSet is changed (d532d57)
• A comment for field precommit_token in message .google.spanner.v1.ResultSet is changed (d532d57)
• A comment for field query_plan in message .google.spanner.v1.ResultSetStats is changed (d532d57)
• A comment for field row_count_lower_bound in message .google.spanner.v1.ResultSetStats is changed (d532d57)
• A comment for field row_type in message .google.spanner.v1.ResultSetMetadata is changed (d532d57)
• A comment for field rows in message .google.spanner.v1.ResultSet is changed (d532d57)
• A comment for field stats in message .google.spanner.v1.PartialResultSet is changed (d532d57)
• A comment for field stats in message .google.spanner.v1.ResultSet is changed (d532d57)
• A comment for field values in message .google.spanner.v1.PartialResultSet is changed (d532d57)
• A comment for message ResultSetMetadata is changed (d532d57)
• A comment for message ResultSetStats is changed (d532d57)
• Fix markdown formatting in transactions page (#1377) (de322f8)

3.54.0 (2025-04-28)

Features

• Add interval type support (#1340) (6ca9b43)
• Add sample for pre-split feature (#1333) (ca76108)
• Add SQL statement for begin transaction isolation level (#1331) (3ac0f91)
• Support transaction isolation level in dbapi (#1327) (03400c4)

Bug Fixes

• Improve client-side regex statement parser (#1328) (b3c259d)

3.53.0 (2025-03-12)

Features

• Add AddSplitPoints API (7a5afba)
• Add Attempt, Operation and GFE Metrics (#1302) (fb21d9a)
• Add REST Interceptors which support reading metadata (7a5afba)
• Add support for opt-in debug logging (7a5afba)
• Add support for reading selective GAPIC generation methods from service YAML (7a5afba)
• Add the last statement option to ExecuteSqlRequest and ExecuteBatchDmlRequest (7a5afba)
• Add UUID in Spanner TypeCode enum (7a5afba)
• End to end tracing (#1315) (aa5d0e6)
• Exposing FreeInstanceAvailability in InstanceConfig (7a5afba)
• Exposing FreeInstanceMetadata in Instance configuration (to define the metadata related to FREE instance type) (7a5afba)
• Exposing InstanceType in Instance configuration (to define PROVISIONED or FREE spanner instance) (7a5afba)
• Exposing QuorumType in InstanceConfig (7a5afba)
• Exposing storage_limit_per_processing_unit in InstanceConfig (7a5afba)
• Snapshot isolation (#1318) (992fcae)
• spanner: A new enum IsolationLevel is added (#1224) (7a5afba)

Bug Fixes

• Allow Protobuf 6.x (#1320) (1faab91)
• Cleanup after metric integration test (#1322) (d7cf8b9)
• deps: Require grpc-google-iam-v1>=0.14.0 (7a5afba)
• Fix typing issue with gRPC metadata when key ends in -bin (7a5afba)

Performance Improvements

• Add option for last_statement (#1313) (19ab6ef)

Documentation

• A comment for enum DefaultBackupScheduleType is changed (7a5afba)
• A comment for enum value AUTOMATIC in enum DefaultBackupScheduleType is changed (7a5afba)
• A comment for enum value GOOGLE_MANAGED in enum Type is changed (7a5afba)
• A comment for enum value NONE in enum DefaultBackupScheduleType is changed (7a5afba)
• A comment for enum value USER_MANAGED in enum Type is changed (7a5afba)
• A comment for field base_config in message .google.spanner.admin.instance.v1.InstanceConfig is changed (7a5afba)
• A comment for field default_backup_schedule_type in message .google.spanner.admin.instance.v1.Instance is changed (7a5afba)
• A comment for field filter in message .google.spanner.admin.instance.v1.ListInstanceConfigOperationsRequest is changed (7a5afba)
• A comment for field filter in message .google.spanner.admin.instance.v1.ListInstancePartitionOperationsRequest is changed (7a5afba)
• A comment for field instance_config in message .google.spanner.admin.instance.v1.CreateInstanceConfigRequest is changed (7a5afba)
• A comment for field instance_partition_deadline in message .google.spanner.admin.instance.v1.ListInstancePartitionOperationsRequest is changed (7a5afba)
• A comment for field location in message .google.spanner.admin.instance.v1.ReplicaInfo is changed (7a5afba)
• A comment for field node_count in message .google.spanner.admin.instance.v1.Instance is changed (7a5afba)
• A comment for field node_count in message .google.spanner.admin.instance.v1.InstancePartition is changed (7a5afba)
• A comment for field operations in message .google.spanner.admin.instance.v1.ListInstanceConfigOperationsResponse is changed (7a5afba)
• A comment for field operations in message .google.spanner.admin.instance.v1.ListInstancePartitionOperationsResponse is changed (7a5afba)
• A comment for field optional_replicas in message .google.spanner.admin.instance.v1.InstanceConfig is changed (7a5afba)
• A comment for field parent in message .google.spanner.admin.instance.v1.ListInstancePartitionsRequest is changed (7a5afba)
• A comment for field processing_units in message .google.spanner.admin.instance.v1.Instance is changed (7a5afba)
• A comment for field processing_units in message .google.spanner.admin.instance.v1.InstancePartition is changed (7a5afba)
• A comment for field referencing_backups in message .google.spanner.admin.instance.v1.InstancePartition is changed (7a5afba)
• A comment for field replicas in message .google.spanner.admin.instance.v1.InstanceConfig is changed (7a5afba)
• A comment for field storage_utilization_percent in message .google.spanner.admin.instance.v1.AutoscalingConfig is changed (7a5afba)
• A comment for field unreachable in message .google.spanner.admin.instance.v1.ListInstancePartitionsResponse is changed (7a5afba)
• A comment for message CreateInstanceConfigRequest is changed (7a5afba)
• A comment for message DeleteInstanceConfigRequest is changed (7a5afba)
• A comment for message UpdateInstanceConfigRequest is changed (7a5afba)
• A comment for method CreateInstance in service InstanceAdmin is changed (7a5afba)
• A comment for method CreateInstanceConfig in service InstanceAdmin is changed (7a5afba)
• A comment for method CreateInstancePartition in service InstanceAdmin is changed ([7a5afba](https://github.com/googleapis...

3.52.0 (2025-02-19)

Features

• Add additional opentelemetry span events for session pool (a6811af)
• Add GCP standard otel attributes for python client (#1308) (0839f98)
• Add updated span events + trace more methods (#1259) (ad69c48)
• MetricsTracer implementation (#1291) (8fbde6b)
• Support GRAPH and pipe syntax in dbapi (#1285) (959bb9c)
• Support transaction and request tags in dbapi (#1262) (ee9662f)
• x-goog-spanner-request-id: Introduce AtomicCounter (#1275) (f2483e1)

Bug Fixes

• Retry UNAVAILABLE errors for streaming RPCs (#1278) (ab31078), closes #1150
• tracing: Ensure nesting of Transaction.begin under commit + fix suggestions from feature review (#1287) (d9ee75a)
• tracing: Only set span.status=OK if UNSET (#1248) (1d393fe), closes #1246
• Update retry strategy for mutation calls to handle aborted transactions (#1279) (0887eb4)

3.51.0 (2024-12-05)

Features

• Add connection variable for ignoring transaction warnings (#1249) (eeb7836)
• spanner: Implement custom tracer_provider injection for opentelemetry traces (#1229) (6869ed6)
• Support float32 parameters in dbapi (#1245) (829b799)

Bug Fixes

• Allow setting connection.read_only to same value (#1247) (5e8ca94)
• Allow setting staleness to same value in tx (#1253) (a214885)
• Dbapi raised AttributeError with [] as arguments (#1257) (758bf48)

Performance Improvements

• Optimize ResultSet decoding (#1244) (ccae6e0)
• Remove repeated GetSession calls for FixedSizePool (#1252) (c064815)

Documentation

• samples: Add samples for Cloud Spanner Default Backup Schedules (#1238) (054a186)

3.50.1 (2024-11-14)

Bug Fixes

• Json data type for non object values (#1236) (0007be3)
• spanner: Multi_scm issue in python release (#1230) (6d64e9f)