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Merge pull request #2412 from joolean/issues/2189

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Prevent overlapping expr name prefixes from corrupting projection expr
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Steve Pulec 2019-09-11 22:02:34 -05:00 • committed by GitHub
commit 7a01b7ce9e
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2 changed files with 57 additions and 1 deletions
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11
moto/dynamodb2/responses.py
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@ -356,9 +356,18 @@ class DynamoHandler(BaseResponse):
if projection_expression and expression_attribute_names:
expressions = [x.strip() for x in projection_expression.split(',')]
projection_expression = None
for expression in expressions:
if projection_expression is not None:
projection_expression = projection_expression + ", "
else:
projection_expression = ""
if expression in expression_attribute_names:
projection_expression = projection_expression.replace(expression, expression_attribute_names[expression])
projection_expression = projection_expression + \
expression_attribute_names[expression]
else:
projection_expression = projection_expression + expression
filter_kwargs = {}