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http://opensource.atlassian.com/projects/hibernate/browse/HHH-892?page=co...
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Miguel Diaz commented on HHH-892:
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This issue affects more cases than a simple ORDER BY:
SELECT a, (SELECT sum(b.x) FROM MyClass2 b WHERE b.parent = a) computed
FROM MyClass1 a
WHERE computed = 0 or computed is null
since 'computed' is used twice in the WHERE clause the workaround would be to
duplicate the subquery, but that would have a performance impact.
I think this is not an uncommon use case so this issue deserves more (well, some at least)
attention.
Thanks in advance.
HQL parser does not resolve alias in ORDER BY clause
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Key: HHH-892
URL:
http://opensource.atlassian.com/projects/hibernate/browse/HHH-892
Project: Hibernate3
Issue Type: Bug
Components: query-hql
Affects Versions: 3.0.5
Environment: Hibernate 3.0.5, MySQL, Tomcat
Reporter: Guido Laures
Priority: Minor
When using an alias for an ORDER BY clause this is not always correctly resolved.
Example:
SELECT SUM(A.x) AS mySum FROM MyClass AS A GROUP BY A.y ORDER BY mySum
does not work because "mySum" is not resolved in the ORDER BY clause which
results in an exception telling that mySum is an unknown column.
Workaround (not to say "hack") is using:
SELECT SUM(A.x) AS mySum FROM MyClass AS A GROUP BY A.y ORDER BY col_0_0_
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