Hi,
it would be good if SA has similar feature to return scalar, but from
the point of view of objects - SA internally knows inheritance and
so on ... so one doesnt have to bother of exact tables, but only the
object. This can be usefull for reporting on top of SA - see for
example if you have
Michael Bayer ha scritto:
SelectResults is used for mapped classes, the columns that are to be
selected for a particular mapping are fixed. theres no reason youd
want to be able to change the column clause.
I try to do an example:
create table macrocategory ( code char(3),
we currently have this feature:
http://www.sqlalchemy.org/docs/adv_datamapping.myt#advdatamapping_selects
which can return a result with more than one entity per row. the hard
part here is defining the select statement. SQLAlchemy doesnt know
how to compile select statements that go across
Glauco ha scritto:
CUT
The simplest example is to specify columns to select on a generated qry
(not all field of all tables involved in the generated qry).
does the sqlalchemy.ext.selectresults.SelectResults object have
something like column clause parameter of select function?
Thank's
