[Python] How to Connect Langchain Database Agent with SqlServer

Discussão em 'Python' iniciado por Stack, Maio 20, 2025.

  1. Stack

    Stack Membro Participativo

    I need to connect my langchain database agent with my sqlserver database so that my agent can access the data, yet in the documention it does not explain how to do so, it only shows how to connect to sqlite like the following code:

    from langchain.agents import create_sql_agent
    from langchain.agents.agent_toolkits import SQLDatabaseToolkit
    from langchain.sql_database import SQLDatabase
    from langchain.llms.openai import OpenAI
    from langchain.agents import AgentExecutor
    from langchain.agents.agent_types import AgentType
    from langchain.chat_models import ChatOpenAI


    db = SQLDatabase.from_uri("sqlite:///../../../../../notebooks/Chinook.db")
    toolkit = SQLDatabaseToolkit(db=db, llm=OpenAI(temperature=0))


    I have tried to replace this code:

    db = SQLDatabase.from_uri("sqlite:///../../../../../notebooks/Chinook.db")


    with this:

    db = SQLDatabase.from_uri("mssql+pyodbc://{server}/{database}?driver{driver}")


    but the following error showed up:


    sqlalchemy.exc.InterfaceError: (pyodbc.InterfaceError) ('IM002', '[IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified (0) (SQLDriverConnect)') (Background on this error at: https://sqlalche.me/e/20/rvf5)**
    ​

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