langchain-hana 0.2.1

An integration package connecting SAP HANA Cloud and LangChain

LangChain integration for SAP HANA Cloud

About this project

Integrates LangChain with SAP HANA Cloud to make use of vector search, knowledge graph, and further in-database capabilities as part of LLM-driven applications.

Requirements and Setup

Prerequisites

• Python Environment: Ensure you have Python 3.9 or higher installed.
• SAP HANA Cloud: Access to a running SAP HANA Cloud instance.

Installation

Install the LangChain SAP HANA Cloud integration package using pip:

pip install -U langchain-hana

Setting Up Vectorstore

The HanaDB class is used to connect to SAP HANA Cloud Vector Engine.

Important: You can use any embedding class that inherits from langchain_core.embeddings.Embeddings—including HanaInternalEmbeddings, which runs SAP HANA’s VECTOR_EMBEDDING() function internally. See SAP Help for more details.

Here’s how to set up the connection and initialize the vector store:

from langchain_hana import HanaDB, HanaInternalEmbeddings
from langchain_openai import OpenAIEmbeddings
from hdbcli import dbapi

# 1) HANA-internal embedding
internal_emb = HanaInternalEmbeddings(internal_embedding_model_id="SAP_NEB.20240715")
# 2) External embedding
external_emb = OpenAIEmbeddings()

# Establish the SAP HANA Cloud connection
connection = dbapi.connect(
    address="<hostname>",
    port=3<NN>MM,
    user="<username>",
    password="<password>"
)

# Initialize the HanaDB vector store
vectorstore = HanaDB(
    connection=connection,
    embeddings=internal_emb,  # or external_emb
    table_name="<table_name>"  # Optional: Default is "EMBEDDINGS"
)

Support, Feedback, Contributing

This project is open to feature requests/suggestions, bug reports etc. via GitHub issues. Contribution and feedback are encouraged and always welcome. For more information about how to contribute, the project structure, as well as additional contribution information, see our Contribution Guidelines.

Security / Disclosure

If you find any bug that may be a security problem, please follow our instructions at in our security policy on how to report it. Please do not create GitHub issues for security-related doubts or problems.

Code of Conduct

We as members, contributors, and leaders pledge to make participation in our community a harassment-free experience for everyone. By participating in this project, you agree to abide by its Code of Conduct at all times.

Licensing

Copyright 2025 SAP SE or an SAP affiliate company and langchain-integration-for-sap-hana-cloud contributors. Please see our LICENSE for copyright and license information. Detailed information including third-party components and their licensing/copyright information is available via the REUSE tool.