On Wednesday 17 June 2009 19.08:10 klaus wrote:
... whether a query will yield any result ...
The best approximation
seems to be
query.first() is not None
which can select a lot of columns. I often see
query.count() 0
which can become quite expensive on a DBMS like PostgreSQL.
On Jun 17, 1:08 pm, klaus klaus.barthelm...@haufe.de wrote:
not to technicalities in the data model. Would it be difficult to make
something like
session.query(B).join(ref, backward=True)
work?
kw arguments per join condition aren't really an option to join()
since join() is designed
