jo wrote:
> Here another difference between Oracle and PostgreSQL
> The SQLAlchemy.func.max() on a column date, returns a datetime.date in
> pg but a datetime.datetime in oracle...
> Why this difference?
Oracle doesn't have a "date" type. this is another thing the types
system smoothes out (can't speak for 0.3 though).
If you're using Oracle, I can't recommend upgrading to 0.6 more strongly -
Oracle was an almost completely untested alpha dialect in 0.3 and has
continued to have major issues throughout 0.5, until we finally had the
resources to get 100% test coverage in 0.6.
>
>
> take a look:
>
> Bolletta = Table('bolletta', database.metadata,
> Column('id', Integer, nullable=False, primary_key=True),
> Column('data', Date)
> )
>
>
> postgres session | oracle
> session
> ---------------------------------------------------------------|---------------------------------------------------------------
> In [1]: from sqlalchemy import select, func | In [1]:
> from sqlalchemy import select, func
> |
> In [2]: select([Bolletta.c.data]).execute().scalar() | In [2]:
> select([Bolletta.c.data]).execute().scalar()
> SELECT bolletta.data FROM bolletta | SELECT
> bolletta.data FROM bolletta
> |
> Out[2]: datetime.date(2007, 12, 31) | Out[2]:
> datetime.date(2010, 4, 7)
> |
> In [3]: select([func.max(Bolletta.c.data)]).execute().scalar() | In [3]:
> select([func.max(Bolletta.c.data)]).execute().scalar()
> SELECT max(bolletta.data) FROM bolletta | SELECT
> max(bolletta.data) FROM bolletta
> |
> Out[3]: datetime.date(2010, 4, 7) | Out[3]:
> *datetime.datetime(*2010, 4, 7, 0, 0),)
> ---------------------------------------------------------------|---------------------------------------------------------------
>
>
> j
>
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