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