Hi list! It's been a long time since I've posted here. SA is still the best Python ORM; thanks for all your hard work Mike!
Now, the question. I've got a set of related entities: Order (has items) Item (has attributes) Attribute I am working on optimizing the loading and have run into a situation that I can't figure out how to make SA optimize. Here's the scenario: First I load the order (1 query) Next I load the related items (1 query) Next I load the related attributes for each item (1 query for each item) I have tried eager loading (i.e. setting lazy=False on the item.attributes relationship), but that generates a HUGE result set that takes MUCH longer to load than loading the attributes individually for each item as listed above. What I'd like to have SA do is do a single query to load all attributes for all items of the order when the first item's attributes are requested. Here's the revised scenario from above: First I load the order (1 query) Next I load the related items (1 query) Next I load the related attributes for each item (1 query loads all attributes for the entire order) Is this possible or do I have to roll my own extension to orm.relation (actually orm.properties.PropertyLoader) ? -- that doesn't look very fun. ~ Daniel --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~----------~----~----~----~------~----~------~--~---
