Changelog

0.9.1 (2026-07-17)

Note that this is the latest release which removes langchain-community dependency but still not updating langchain packages to v1, so still Python 3.9 compatible.

Bug Fixes

• gcloud: Migrate gsutil usage to gcloud storage by @gurusai-voleti in https://github.com/googleapis/langchain-google-spanner-python/pull/214

• ci: delete inactive kokoro release folder by @suztomo in https://github.com/googleapis/langchain-google-spanner-python/pull/229

• refactor: remove dependency on langchain-community and update to gemini-3.5-flash by @lcjin-del in https://github.com/googleapis/langchain-google-spanner-python/pull/238

Documentation

• Fix jupyter notebook steps (#196) (fffee5d)

0.9.0 (2025-07-23)

Features

• Graph_name validation on graph store construction (#162) (c753a74)

• graph: Enable setting up the timeout for queries (#178) (1c5cf19), closes #170

• graph: Handle cases when a single table is multiplexed by multi… (#169) (f99c115)

• graph: Raise InvalidGQLGenerationError with intermediate_steps (#175) (22f2158), closes #178

Bug Fixes

• graph: ‘verified_gql’ exception (9940b86)

• graph: Ensure intermediate_steps always show generated query (#174) (d74f040), closes #173

• graph: Optimize the size of the serialized schema (#182) (51dba31), closes #181

• graph: Sorts keys to make serialization determistic (#184) (cc156f3), closes #183

Documentation

• Correct spelling of Spanner in README.rst (#179) (a32aade)

0.8.2 (2025-03-12)

Bug Fixes

• graph: Minor tweek to the prompts (#158) (35a6342)

• Handle unspecified column_configs for KNN (#157) (2109892)

Documentation

• samples: Provide an end to end notebook for graphrag using custom retrievers (#159) (7ff3620)

0.8.1 (2025-02-20)

Bug Fixes

• graph: Allow property names with different cases (#149) (37f2324)

• graph: Support DATE type (#150) (941e38e)

0.8.0 (2025-02-07)

Features

• graph: Flexible Schema Extension to SpannerGraphStore (#125) (44db678)

• Implement Approximate Nearest Neighbor support for DDL (CREATE TABLE, CREATE VECTOR INDEX) (#124) (5a25f91)

• samples: Provide guide for ANN vector store end-to-end usage in Jupyter Notebook (#139) (f78b9ee), closes #94

Bug Fixes

• Make ANN algorithm updates based off usage + testing (#140) (524678b)

• testing+linting: Add nox lint+format directives (#123) (b10dc28)

0.7.0 (2025-01-29)

Features

• graph: Add Custom Retrievers for Spanner Graph RAG. (#122) (bf2903a)

⚠ BREAKING CHANGES

• extract_gql, fix_gql_syntax are now in the graph_utils module(#122) (bf2903a)

0.6.0 (2024-12-05)

Features

• Add Spanner Graph QA Chain (#111) (e22abde)

0.5.0 (2024-11-25)

Features

• graph: Add Spanner Graph support to LangChain GraphStore interface (#104) (98c2f8f)

0.4.1 (2024-10-04)

Bug Fixes

• Adding support to initialize with empty metadata columns (#99) (3a8367c)

0.4.0 (2024-09-24)

Features

• Remove support for Python 3.8 (#92) (8446e0e)

Bug Fixes

• Use Spanner’s UPSERT over INSERT (#90) (2637e2d)

Documentation

• Fix format in README.rst (#84) (366a040)

0.3.0 (2024-05-06)

Features

• ci: Test against multiple versions (#45) (1e9c1a1)

Bug Fixes

• Make client optional when init (#60) (0f5124a)

Documentation

• Add API reference docs (#59) (0f62a6a)

• Add github links (#37) (da7f833)

0.2.1 (2024-03-06)

Bug Fixes

• Update user agent (#36) (a8f6f71)

Documentation

• Update colabs (#30) (af66f7c)

0.2.0 (2024-02-29)

Features

• Creating static utility for initialing chat history table (#26) (e61499b)

Documentation

• Adding codelab for Spanner with DocLoader, VectorStore & Memory (#23) (06a6c95)

• Update Sample Netflix Application (#28) (2508ca8)

0.1.0 (2024-02-26)

Features

• Add document loader (#9) (7a77d26)

• Spanner Implementation for Vector Store (#10) (9cbae82)

• SpannerChatMessageHistory implementation (#7) (f9a3b93)

Documentation

• Update README.md (#22) (e9eb86b)

• Vector store notebook docs (#18) (4c1bd91)