- As a result of creating this class Todo, we can do certain things with it which would mirror operations that we would do in a relational database. So, for example, to do a typical SELECT * FROM todos we would instead interact with the class Todo, like this Todo.query.all(). This class Todo would then have an object called query that has a ...
- 内部采用threading.local进行隔离 session = scoped_session(Session) # 正向：查看第一个老师都在哪些班级（通过逻辑字段的名字） result = session.query(Teachers).first() # result.re_class是一个列表，存了有关该老师所在的班级 <class 'sqlalchemy.orm.collections.InstrumentedList'> for class_obj in ...
- Mar 18, 2015 · oAuthor = DBSession.query(User).filter_by(name="Sheena O'Connell") #an author writes a post oPost = WikiPost() oPost.name = "Sqlalchemy Cheat Sheet" oPost.author = oAuthor #later on another user edits it oEditor = DBSession.query(User).filter_by(name="Yi-Jirr Chen") oEditor.edited_posts.append(oPost) #interact with existing relationships for ...
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