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Bug #213

open

Error on ORDER BY variables projected away by SELECT clause

Added by Alex Hall - almost 13 years ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
Query Engine
Target version:
-
Start date:
02/07/2012
Due date:
% Done:

0%

Estimated time:
Resolution:

Description

A SPARQL query that mentions a variable in an ORDER BY expression that appears in the WHERE clause but is projected away by the SELECT clause incorrectly causes an exception to be thrown. According to SPARQL, ordering is applied prior to projection, so this should be valid. This appears to be a case where TQL and SPARQL semantics are mis-aligned.

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