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Fixed #17027 -- Added support for the power operator in F expressions.

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Thanks dan at dlo.me for the initial patch.

- Added __pow__ and __rpow__ to ExpressionNode
- Added oracle and mysql specific power expressions
- Added used-defined power function for sqlite
This commit is contained in:
Florian Hahn 2013-02-21 23:02:18 +01:00 • committed by Tim Graham
parent 1597503a01
commit 5240b83462
9 changed files with 56 additions and 2 deletions
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8
django/db/backends/mysql/base.py
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@ -386,6 +386,14 @@ class DatabaseOperations(BaseDatabaseOperations):
items_sql = "(%s)" % ", ".join(["%s"] * len(fields))
return "VALUES " + ", ".join([items_sql] * num_values)
def combine_expression(self, connector, sub_expressions):
"""
MySQL requires special cases for ^ operators in query expressions
"""
if connector == '^':
return 'POW(%s)' % ','.join(sub_expressions)
return super(DatabaseOperations, self).combine_expression(connector, sub_expressions)
class DatabaseWrapper(BaseDatabaseWrapper):
vendor = 'mysql'