without seeing a full example, its looking like a mysql bug. SA's datetime implementation for MySQL doesnt do any conversion from return value since MySQLDB handles that task. whereas the sqlite dialect in SA *does* do conversion since sqlite doesnt handle that.
Below my small example (It doesn't clarify where the problem is) I hope someone else will check it, with other databases too (postgres, for example) I hope it can help My results: sqlite_engine (True, True) mysql_engine (False, False) My configuration: debian etch sqlite 3 sqlalchemy trunk Revision: 2212 mysql 5.0.30 python 2.4.4 Alessandro PS: I hope this email will keep identation. I have also put this test in http://pastebin.com/861936 import datetime from sqlalchemy import * def check(engine): mytest = Table('mytest', engine, Column('date', DateTime, primary_key=True, \ default=datetime.datetime.now)) try: mytest.drop() except: pass mytest.create() mytest.insert().execute() tt = mytest.alias('tt') selTagged = select([tt.c.date, select([tt.c.date], tt.c.date==mytest.c.date, from_obj=[mytest], limit=1, offset=0, scalar=True).label('last_mod')] ) #Note: 'text' need typemap selText = text(selTagged.__str__(), engine, \ typemap={'last_mod':types.DateTime}) def isdatetime(sel): return isinstance(sel.execute().fetchone().last_mod, \ datetime.datetime) return isdatetime(selTagged), isdatetime(selText) sqlite_engine = create_engine('sqlite:///database_test.db') mysql_engine = create_engine('mysql://[EMAIL PROTECTED]/xxx') print "sqlite_engine", check(sqlite_engine) print "mysql_engine", check(mysql_engine) --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
