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Correct optimization over selection and product

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This commit is contained in:
Salvo 'LtWorf' Tomaselli 2016-04-19 17:47:36 +02:00
parent fb643bd26d
commit 4d1b610605
2 changed files with 2 additions and 1 deletions
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CHANGELOG
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@ -2,6 +2,7 @@
- Add new class of tests for queries that are supposed to fail - Add new class of tests for queries that are supposed to fail
- Changes to make failures in commutative operators commutative too - Changes to make failures in commutative operators commutative too
- Added new optimization to remove useless joins - Added new optimization to remove useless joins
- Correct optimization over selection and product
2.4 2.4
- Improve error reporting - Improve error reporting

2
relational/optimizations.py
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@ -573,7 +573,7 @@ def selection_and_product(n, rels):
i contains attributes belonging to Q and l contains attributes belonging to both''' i contains attributes belonging to Q and l contains attributes belonging to both'''
changes = 0 changes = 0
if n.name == SELECTION and n.child.name in (PRODUCT, JOIN, JOIN_LEFT, JOIN_RIGHT, JOIN_FULL): if n.name == SELECTION and n.child.name in (PRODUCT, JOIN):
l_attr = n.child.left.result_format(rels) l_attr = n.child.left.result_format(rels)
r_attr = n.child.right.result_format(rels) r_attr = n.child.right.result_format(rels)