I have a compound SELECT statement (of class CompoundSelect) that is composed of a few normal SELECTs combined by UNION. from_obj of this SELECT contains all columns of a table that is mapped to a class. I would like to get objects created using defined mapper, but selected using my compound SELECT statement.
I have found a solution: mappers have method 'instances' that can be used like that: instancesList = someMapper.instances(dbSession.execute(compoundSelect), dbSession) The problem is that I get normal Python list, which eats much resources when database is big. Much better would be Query object which supports lazy loading. Note that I cannot use Query.filter(compoundSelect._whereclause) because CompundSelect doesn't have _whereclause. Another solution is to use a new, non_primary mapper defined on compundSelect, but then I wouldn't have relations. I hope some simple solution exists :). Regards, Artur --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
