57 lines
1.5 KiB
Python
57 lines
1.5 KiB
Python
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"""
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18. Using SQL reserved names
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Need to use a reserved SQL name as a column name or table name? Need to include
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a hyphen in a column or table name? No problem. Django quotes names
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appropriately behind the scenes, so your database won't complain about
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reserved-name usage.
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"""
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from django.db import models
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class Thing(models.Model):
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when = models.CharField(maxlength=1, primary_key=True)
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join = models.CharField(maxlength=1)
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like = models.CharField(maxlength=1)
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drop = models.CharField(maxlength=1)
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alter = models.CharField(maxlength=1)
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having = models.CharField(maxlength=1)
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where = models.DateField(maxlength=1)
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has_hyphen = models.CharField(maxlength=1, db_column='has-hyphen')
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class Meta:
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db_table = 'select'
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def __repr__(self):
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return self.when
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API_TESTS = """
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>>> import datetime
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>>> day1 = datetime.date(2005, 1, 1)
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>>> day2 = datetime.date(2006, 2, 2)
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>>> t = Thing(when='a', join='b', like='c', drop='d', alter='e', having='f', where=day1, has_hyphen='h')
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>>> t.save()
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>>> print t.when
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a
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>>> u = Thing(when='h', join='i', like='j', drop='k', alter='l', having='m', where=day2)
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>>> u.save()
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>>> print u.when
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h
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>>> Thing.objects.order_by('when')
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[a, h]
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>>> v = Thing.objects.get(pk='a')
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>>> print v.join
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b
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>>> print v.where
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2005-01-01
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>>> Thing.objects.order_by('select.when')
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[a, h]
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>>> Thing.objects.dates('where', 'year')
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[datetime.datetime(2005, 1, 1, 0, 0), datetime.datetime(2006, 1, 1, 0, 0)]
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>>> Thing.objects.filter(where__month=1)
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[a]
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"""
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