On Fri, 4 Oct 2013 15:55:07 +0300 "Ofir Herzas" <[email protected]> wrote:
> You can create a custom field in your model and check against it: > > class Plan(Base): > . > . > . > @property > def calculated_date(self): > return date(self.year, self.month, self.day) > > > Then, in your query, use that field: > session.query(Plan).filter(Plan.calculated_date.between(from_date, > to_date)) > > Haven't checked it myself, but I guess it should work ... Thanks, but now I receive the error: AttributeError: 'property' object has no attribute 'between' > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Enrico Morelli > Sent: Friday, October 04, 2013 12:07 PM > To: [email protected] > Subject: [sqlalchemy] Query for date between a range > > Dear all, > > I've a table where the date is separated in single fields, one for > year, one for day and one for month. So I need to query for a date > range. I search in Internet and I found the following query that > seems to be works: SELECT * > FROM plan > WHERE year * 10000 + month * 100 + day BETWEEN +'20130101' AND > '20130131'; > > Now I'm trying to translate to sqlalchemy, but I receive the following > error: > > DataError: (DataError) invalid input syntax for integer: > "2013-01-01T00:00:00" LINE 3: ...year * 1000 + plan.month * 100 + > plan.day BETWEEN '2013-01-0... ^ 'SELECT plan.data AS plan_data, > plan.month AS plan_month, plan.instrument_id AS plan_instrument_id, > count(plan.instrument_id) AS count_1 \nFROM plan \nWHERE plan.year * > %(year_1)s + plan.month * %(month_1)s + plan.day BETWEEN %(param_1)s > AND %(param_2)s AND plan.data ILIKE %(data_1)s GROUP BY plan.data, > plan.month, plan.instrument_id ORDER BY month, > instrument_id' {'data_1': u'%#L%', 'param_1': datetime.datetime(2013, > 1, 1, 0, 0), 'month_1': 100, 'year_1': 1000, 'param_2': > datetime.datetime(2013, 10, 3, 0, 0)} > > > The latest attempt to write the correct code is the following (the > range come from a web form using a javascript plugin): > > from_date = request.POST.get('from_date', '') to_date = > request.POST.get('to_date', '') from_date = > datetime.strptime(from_date, '%Y-%m-%d') to_date = > datetime.strptime(to_date, '%Y-%m-%d') if from_date.day < 10: > day = "0%s" % from_date.day > else: > day = "%s" % from_date.day > if from_date.month < 10: > month = "0%s" % from_date.month > else: > month = "%s" % from_date.month > if to_date.day < 10: > tday = "0%s" % to_date.day > else: > tday = "%s" % to_date.day > if to_date.month < 10: > tmonth = "0%s" % to_date.month > else: > tmonth = "%s" % to_date.month > fd = '%s%s%s' % (from_date.year, month, day) td = '%s%s%s' % > (to_date.year, tmonth, tday) print fd, td results = > Session.query(Plan.data, > Plan.month,Plan.instrument_id,func.count(Plan.instrument_id)).filter( > and_((Plan.year*1000+Plan.month*100+Plan.day).between(from_date, > to_date), Plan.data.ilike('%%%s%%' % item),)).group_by( > Plan.data, Plan.month, > Plan.instrument_id ).order_by('month', 'instrument_id').all() > > Where I'm wrong? > > Thanks to all > -- > ------------------------------------------------------------- > Enrico Morelli > System Administrator | Programmer | Web Developer > > CERM - Polo Scientifico > Via Sacconi, 6 - 50019 Sesto Fiorentino (FI) - ITALY > phone: +39 055 457 4269 > fax: +39 055 457 4253 > ------------------------------------------------------------- > > -- > You received this message because you are subscribed to the Google > Groups "sqlalchemy" group. > To unsubscribe from this group and stop receiving emails from it, > send an email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/sqlalchemy. > For more options, visit https://groups.google.com/groups/opt_out. > -- ------------------------------------------------------------- Enrico Morelli System Administrator | Programmer | Web Developer CERM - Polo Scientifico Via Sacconi, 6 - 50019 Sesto Fiorentino (FI) - ITALY phone: +39 055 457 4269 fax: +39 055 457 4253 ------------------------------------------------------------- -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/groups/opt_out.
