if you're talking about attribute history like attributes.get_history(MyClass.someattr) or inspect(my_object).attrs.history, that's all ORM stuff. SQLAlchemy Core (which might really be better to learn first, if you're really reading the docs cover to cover as opposed to just trying to do something quickly; conceptually it is much simpler than the ORM) is only about SQL statements coming from Python, not object relational mapping.
On Mar 17, 2014, at 4:30 PM, Bao Niu <niuba...@gmail.com> wrote: > I've been reading the documentation on Using the Session -- Merging. The > concept like *change history*, *history stream* occur several times. I know > the history attribute is something that belongs to the *Core*. But my > question is, is this really useful for learning ORM? How much knowledge about > the Core is optimal for a ORM user who just wants to quickly establish an > application? > > Pardon me if my question may not sound very technical, I'm just trying to > elicit some guide from experienced users here so newbies like me would have a > better idea of the route to go, instead of hesitating whether to learn the > core first or just read orm part would be good. For experienced users it may > not be a question but for new users learning the entire core is a HUGE > barrier;) Many many thanks! > > -- > You received this message because you are subscribed to the Google Groups > "sqlalchemy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sqlalchemy+unsubscr...@googlegroups.com. > To post to this group, send email to sqlalchemy@googlegroups.com. > Visit this group at http://groups.google.com/group/sqlalchemy. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sqlalchemy+unsubscr...@googlegroups.com. To post to this group, send email to sqlalchemy@googlegroups.com. Visit this group at http://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/d/optout.
