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Salvo 'LtWorf' Tomaselli 2020-06-18 16:59:15 +02:00
parent 95a4287e68
commit 79610ab8f5
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1 changed files with 4 additions and 2 deletions
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relational/optimizations.py
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@ -126,7 +126,9 @@ def futile_union_intersection_subtraction(n: parser.Node) -> Tuple[parser.Node,
n.right.child), 1
# Subtraction of the same thing or with selection on the left child
elif n.name == DIFFERENCE and (n.left == n.right or (n.left.name == SELECTION and n.left.child == n.right)):
elif n.name == DIFFERENCE and \
isinstance(n, Binary) and \
(n.left == n.right or (n.left.name == SELECTION and n.left.child == n.right)):
return Unary(
SELECTION,
'False',
@ -329,7 +331,7 @@ def swap_rename_projection(n: parser.Node) -> Tuple[parser.Node, int]:
del renames[i]
child = Unary(PROJECTION,'' , n.child.child)
child.set_projection_prop(projections)
child.set_projection_prop(list(projections))
n = Unary(RENAME, '', child)
n.set_rename_prop(renames)
return n, 1