taking a look, i think what you should do is use an alias of the table_Employee in your queries. since the engineer mapper is using joined table inheritance, the default table_Employee is already going to be involved in the query, so your external join condition needs to be off a distinct alias of it to prevent mixups.
On Feb 13, 11:17 am, svilen <[EMAIL PROTECTED]> wrote: > hi. > > Here is a simple case which does not work - or i cannot figure out how > to make it work. > 'give all engineers which have helper employee of age >=20'; > where Engineer inherits Employee via table-inheritance. > > i've tried multiple ways to achieve the result - neither works, in > different ways. > > Some give empty result (2 & 3). IMO in these the FROM is missing a > second table. > > (4) raises Exception about some column missing - but only if neither > of other ways is tried before it; if some of the other ways is tried, > this one does not raise and returns a result. > > (1) is for reference only; > > bye > > t-query.py > 3KDownload --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
