I'm trying to make a many-to-many relationship using sqlalchemy 0.9 and postgres
If I put a unique constraint on the join table, and I add a duplicate, I get an integrity error. If I change the collection class to set, it won't double commit, however a set prevents me from using things like order_by. In my scenario, I'm massively multi-threaded and so the check-before commit methodology won't work (proven it breaks with 24 processes). Is it possible to get a nice elegant solution to this without defining a custom collection_class? I believe this is a regression (enhancement?) from version 0.8, but on 0.8 I was using mysql and now I'm using postgres. -- 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.
