1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
"""
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(max_length=1, primary_key=True)
join = models.CharField(max_length=1)
like = models.CharField(max_length=1)
drop = models.CharField(max_length=1)
alter = models.CharField(max_length=1)
having = models.CharField(max_length=1)
where = models.DateField(max_length=1)
has_hyphen = models.CharField(max_length=1, db_column='has-hyphen')
class Meta:
db_table = 'select'
def __unicode__(self):
return self.when
__test__ = {'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')
[<Thing: a>, <Thing: h>]
>>> v = Thing.objects.get(pk='a')
>>> print v.join
b
>>> print v.where
2005-01-01
>>> 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)
[<Thing: a>]
"""}
|
