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Fixed a regression introduced in where.as_sql() refactor

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At least Oracle needs parentheses in negated where conditions, even if
there is only single condition negated. Fixed this by reverting to old
logic in that part of as_sql() and adding a comment about this.

I did not investigate why the parentheses are needed. The original
offending commit was bd283aa844.
This commit is contained in:
Anssi Kääriäinen 2012-07-01 22:49:38 +03:00
parent f572ee0c65
commit e74787391e
2 changed files with 7 additions and 4 deletions
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2
tests/regressiontests/queries/tests.py
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@ -2091,7 +2091,7 @@ class WhereNodeTest(TestCase):
w = WhereNode(children=[NothingNode(), self.DummyNode()], connector='OR')
self.assertEquals(w.as_sql(qn, connection), ('dummy', []))
w.negate()
self.assertEquals(w.as_sql(qn, connection), ('NOT dummy', []))
self.assertEquals(w.as_sql(qn, connection), ('NOT (dummy)', []))
def test_empty_nodes(self):
qn = connection.ops.quote_name