from utils.rdbmsUtil.databaseUtil import DatabaseUtil from utils.rdbmsUtil.modelBase import Base from utils.rdbmsUtil.modelUser import User, user_factory # user_factory 确保工厂注册代码被执行 from utils.rdbmsUtil.modelUserOperations import UserOperations # company_factory 确保工厂注册代码被执行 from utils.rdbmsUtil.modelCompany import Company, company_factory from utils.rdbmsUtil.modelCompanyOperations import CompanyOperations from sqlalchemy.sql import text import pandas as pd def access_sqlite(): db = DatabaseUtil('sqlite:///mydatabase.db') Base.metadata.create_all(db.engine) companys = [Company(id=1, name="DS-Tech"), Company(id=2, name="ZN-Tech")] users = [User(name="Alice", age=31, companyid=1), User(name="Bob", age=25, companyid=2)] with db.session_scope() as session: company_ops = CompanyOperations() user_ops = UserOperations() company_ops.upsert_companys(session, companys) user_ops.upsert_users(session, users) # session.flush() # 确保所有的 SQL 操作都被推送到数据库 user_ops.update(session, name="Alice", age=32) result = user_ops.get_user(session, name="Alice", age=32) for user in result: print(user) def access_tidb(): print('access TiDB') DatabaseUtil(url='mysql+pymysql://root:123456@192.168.50.234:4000/energy', pool_size=5, max_overflow=3, connect_timeout=1800) db = DatabaseUtil('mysql+pymysql://root:123456@192.168.50.234:4000/energy') with db.session_scope() as session: query_text = f"""SELECT * FROM analysis_result """ query_result = session.execute(text(query_text)).fetchall() dataFrame = pd.DataFrame(query_result) print(dataFrame.head(5)) access_tidb()