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Code Issues 32 Releases Wiki Activity

Fixed limit/offset computations.

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git-svn-id: http://code.djangoproject.com/svn/django/branches/queryset-refactor@6118 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Malcolm Tredinnick 2007-09-13 03:11:44 +00:00
parent cc9d519424
commit a7d01ec9b4
1 changed files with 9 additions and 4 deletions
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13
django/db/models/sql/query.py
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@ -208,7 +208,7 @@ class Query(object):
if self.high_mark:
result.append('LIMIT %d' % (self.high_mark - self.low_mark))
if self.low_mark:
assert self.high_mark, "OFFSET not allowed without LIMIT."
assert self.high_mark, "'offset' is not allowed without 'limit'"
result.append('OFFSET %d' % self.low_mark)
params.extend(self.extra_params)
@ -632,10 +632,15 @@ class Query(object):
clamped to any existing high value.
"""
if high:
# None (high_mark's default) is less than any number, so this works.
self.high_mark = max(self.high_mark, high)
if self.high_mark:
self.high_mark = min(self.high_mark, self.low_mark + high)
else:
self.high_mark = self.low_mark + high
if low:
self.low_mark = max(self.high_mark, self.low_mark + low)
if self.high_mark:
self.low_mark = min(self.high_mark, self.low_mark + low)
else:
self.low_mark = self.low_mark + low
def clear_limits(self):
"""