解除數據庫安全模式
SET SQL_SAFE_UPDATES=0;
使用框架連接數據庫,設置連接字符集爲utf-8
python自動創建表
# 初始化數據庫連接:
engine = create_engine('mysql+pymysql://name:password@localhost:port/database_name?charset=utf8', echo=True)
Base.metadata.create_all(engine)
查看數據庫字符集命令
use database_name;
show variables like 'character%';
刪除行命令
delete from table_name where ...
friends = session.query(Friend).filter(Friend.home_user_id==user_id, Friend.flag==3).all();
session.query(Friend).filter(Friend.home_user_id==user_id, opponent_user_id==opponent_user_id).delete()