hi i'm back into my hierachy/graph of objects, which has many paths reaching from one end to another - A-Z, A-B-Z, A-B-C-Z etc. Using hierarchical OR (AND (OR ...))) works but gets very slow as all the 20+ tables involved go in same FROM clause. so i have these questions: - (theoretical) can the alternative made by many ORs over subexpressions at same level be represented with UNION of things made from those subexpressions? - can i use query().join() to form the expression and stick it into the union somehow? should i take query.criterion or something else? - can then the union be put into the query of say root object?
ciao svil --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
