Hi. I am using a self-referential mapper to represent a multi-level tree of parent-child relationships. Typically I've been querying each parent for children that I am interested in. Up till now I have made a new query for each child that I am looking for, which is doesn't seem like the most efficient way to approach this.
I've found that 0.4's aliased joins are great for selecting parents based on their children, and can be eager-loaded to grab entire subtrees with a single query. However each parent in my table can have many children (and trees can many many levels deep) so eager loading root nodes can be a bit slow too. Ideally I would like to be able to eager load only the children that were involved in the join as those are the only ones that I am interested in, so that something like: parent_instance.children or equivalent, only loads children that were part of the original join rather than all of parent_instance's children. Is something like this possible? The closet that I've found is using add_entity after each join in my query. Thanks Stephen --~--~---------~--~----~------------~-------~--~----~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~----------~----~----~----~------~----~------~--~---
