CHANGELOG.md

Changelog

0.15.0 (2026-01-08)

⚠ BREAKING CHANGES

• Refactor PostgresVectorStore and PostgresEngine to depend on PGVectorstore and PGEngine respectively (#316)

Features

• deps: Update langchain-postgres to v0.0.16 (#366) (e773505)
• Disable support for python 3.9 and enable support for python3.13 (#378) (b97060e)
• Update Langgraph dependency to v1 (#379) (7a841b3)

Documentation

• Add Hybrid Search documentation (#329) (14098ca)

Code Refactoring

• Refactor PostgresVectorStore and PostgresEngine to depend on PGVectorstore and PGEngine respectively (#316) (7917d62)

0.14.1 (2025-07-11)

Bug Fixes

• Add support for a metadata column named id (#302) (ceffc44)

0.14.0 (2025-04-29)

Features

• Update Postgres VectorStore to expected LangChain functionality (#290) (605c31d)

Bug Fixes

• docs: Fix link in README (#293) (6bfc58c)
• Update JSON conversion (#296) (4313ba2)

0.13.0 (2025-03-17)

Features

• langgraph: Add Langgraph Checkpointer (#284) (14a4240)

Bug Fixes

• deps: Update dependency numpy to v2 (#251) (a164aa2)
• engine: Loop error on close (#285) (e8bd4ae)

0.12.1 (2025-02-12)

Bug Fixes

• Add write messages to Chat History (#265) (0f69092)
• Enquote column names to not match reserved keywords. (#267) (ef63226)
• Query and return only selected metadata columns (#253) (a8cc5a2)

0.12.0 (2025-01-06)

Features

• Add engine_args argument to engine creation functions (#242) (5f2f7b7)

0.11.1 (2024-11-15)

Documentation

• Add benefits to readme (#224) (f791be0)
• Adding a readme to itemise sample notebooks. (#225) (4ce8be3)

0.11.0 (2024-10-04)

Features

• Remove support for Python 3.8 (#216) (1737adc)

0.10.0 (2024-09-17)

⚠ BREAKING CHANGES

• support async and sync versions of indexing methods
• remove _aexecute(), _execute(), _afetch(), and _fetch() methods

Features

• Add from_engine_args method (de16842)
• Add support for sync from_engine (de16842)
• Allow non-uuid data types for vectorstore primary key (#209) (ffaa87f)
• Refactor to support both async and sync usage (de16842)

Bug Fixes

• Replacing cosine_similarity and maximal_marginal_relevance local methods with the ones in langchain core. (#190) (7f27092)
• Support async and sync versions of indexing methods (de16842)
• Updating the minimum langchain core version to 0.2.36 (#205) (0651231)

Documentation

• Update sample python notebooks to reflect the support for custom schema. (#204) (7ef9335)

0.9.0 (2024-09-05)

Features

• Add support for custom schema names (#191) (1e0566a)

0.8.0 (2024-09-04)

Features

• Add table name to default index name (#171) (8e61bc7)
• Remove langchain-community dependency (#172) (b4f40bb)

Bug Fixes

• Add caching for background loop/thread (#184) (1489f81)
• Fix QueryOptions not applied to similarity search bug (#185) (e5dca97)
• Fixed extra char in requirements.txt (#196) (50dc32f)

Documentation

• Add index choosing guide (#178) (e96ffb6)
• Added vector store initialization from documents (#174) (eb2eac3)
• Update README.md to fix 404 links to templates (#182) (f10ae6c)

0.7.0 (2024-07-23)

Features

• Add similarity search score threshold select function (#157) (71789f0)
• Added example for document saver (#164) (13b909e)
• Auto-generate IDs upon adding embeddings (#158) (a364514)
• Support IAM account override (#160) (2de3cba)

Bug Fixes

• Add key to engine constructor (c12ded9)
• Rename inner product distance search function to inner_product (#168) (c5641c3)

Documentation

• Add docstring to all methods (#163) (61413f1)

0.6.1 (2024-07-01)

Bug Fixes

• Change IVFFlat lists default to 100 (#149) (45854a1)
• Use lazy refresh for Cloud SQL Connector (#144) (cbae094)

Documentation

• Update API reference link (#147) (7ce9f80)

0.6.0 (2024-06-18)

Features

• Add support for quota project (#137) (4f950b9)

0.5.0 (2024-05-30)

Features

• Support LangChain v0.2 (#133) (4364a04)

0.4.1 (2024-05-02)

Bug Fixes

• Missing quote in table name (#123) (b490c81)
• Update required dep to SQLAlchemy[asyncio] (#121) (d480760)

Documentation

• Update readme codeblocks (#124) (1c59d6b)
• Update docs pipeline (#109) (26c5342)

0.4.0 (2024-04-03)

Features

• Support private ip (#106) (0b8df1e)

Bug Fixes

• API reference doc pipeline (#108) (6ab1a40)

0.3.0 (2024-04-02)

Features

• Add API reference docs (#104) (43a9815)

Bug Fixes

• Allow special characters in table name for vector store delete (#100) (7fc1c63)

0.2.0 (2024-03-25)

Features

• ci: Test against multiple versions (#86) (a3f410d)

Bug Fixes

• Sql statement for non-nullable column (#85) (e143e14)

Documentation

• Add check for database (#79) (4959ceb)
• Add github links (#84) (864f642)
• Update langchain_quick_start.ipynb (#81) (5e79043)
• Update quickstart (#76) (37b4380)

0.1.0 (2024-02-28)

Features

• Add CloudSQL Postgresql chatmessagehistory with Integration Tests (#23) (3ab9d4e)
• Add indexing methods (#21) (8eae440)
• Add PostgreSQL loader (#49) (ada45ec)
• Add PostgreSQLEngine (#13) (b181f65)
• Add Vector Store (#14) (f3e1127)

Documentation

• Add chatmessagehistory docs (#48) (5f5df1d)
• Add the code lab notebook (#36) (ab7cbe4)
• Add vectorstore docs (#22) (6c41df2)