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Feb 23, 2024
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docs: Update README.md #22

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20 changes: 20 additions & 0 deletions README.md
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Expand Up @@ -33,6 +33,25 @@ source <your-env>/bin/activate
<your-env>/bin/pip install langchain-google-spanner
```

## Vector Store Usage

Use a vector store to store embedded data and perform vector search.

```python
from langchain_google_sapnner import SpannerVectorstore
from langchain.embeddings import VertexAIEmbeddings

embeddings_service = VertexAIEmbeddings()
vectorstore = SpannerVectorStore(
instance_id="my-instance",
database_id="my-database",
table_name="my-table",
embeddings=embedding_service
)
```

See the full [Vector Store][vectorstore] tutorial.

## Document Loader Usage

Use a document loader to load data as LangChain `Document`s.
Expand Down Expand Up @@ -94,4 +113,5 @@ This is not an officially supported Google product.
[venv]: https://virtualenv.pypa.io/en/latest/
[loader]: ./docs/document_loader.ipynb
[history]: ./docs/chat_message_history.ipynb
[vectorstore]: ./docs/vector_store.ipynb
[langchain]: https://github.com/langchain-ai/langchain