mirror of
https://github.com/hwchase17/langchain
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51 lines
1.2 KiB
Plaintext
51 lines
1.2 KiB
Plaintext
# Motherduck
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>[Motherduck](https://motherduck.com/) is a managed DuckDB-in-the-cloud service.
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## Installation and Setup
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First, you need to install `duckdb` python package.
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```bash
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pip install duckdb
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```
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You will also need to sign up for an account at [Motherduck](https://motherduck.com/)
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After that, you should set up a connection string - we mostly integrate with Motherduck through SQLAlchemy.
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The connection string is likely in the form:
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```
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token="..."
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conn_str = f"duckdb:///md:{token}@my_db"
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```
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## SQLChain
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You can use the SQLChain to query data in your Motherduck instance in natural language.
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```
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from langchain.llms import OpenAI, SQLDatabase, SQLDatabaseChain
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db = SQLDatabase.from_uri(conn_str)
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db_chain = SQLDatabaseChain.from_llm(OpenAI(temperature=0), db, verbose=True)
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```
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From here, see the [SQL Chain](/docs/use_cases/tabular/sqlite.html) documentation on how to use.
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## LLMCache
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You can also easily use Motherduck to cache LLM requests.
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Once again this is done through the SQLAlchemy wrapper.
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```
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import sqlalchemy
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eng = sqlalchemy.create_engine(conn_str)
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langchain.llm_cache = SQLAlchemyCache(engine=eng)
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```
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From here, see the [LLM Caching](/docs/modules/model_io/models/llms/how_to/llm_caching) documentation on how to use.
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