from langchain_community.utilities import SQLDatabase
from langchain_community.agent_toolkits import create_sql_agent
from langchain_community.chat_models.tongyi import ChatTongyi
# SQLAlchemy URI
uri = "mssql+pyodbc://f8_db_test:APN^QPr!K9@122.114.58.23/f8_db_test?driver=ODBC+Driver+18+for+SQL+Server&TrustServerCertificate=yes"

# 建立数据库对象
ssDB = SQLDatabase.from_uri(
    uri,
    include_tables=["NONGHU_INFO"],  # 不加 schema 前缀试试
    schema="dbo"                      # 显式指定 schema
)