Julian Hyde created OPTIQ-364:
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Summary: Validator rejects valid "WITH ... ORDER BY" query
Key: OPTIQ-364
URL: https://issues.apache.org/jira/browse/OPTIQ-364
Project: Optiq
Issue Type: Bug
Reporter: Julian Hyde
Assignee: Julian Hyde
The validator rejects a valid "WITH ... ORDER BY" query, giving the error
"Aggregate expression is illegal in ORDER BY clause of non-aggregating SELECT".
Example:
{code:sql}
with q as (select * from emp)
select count(*) from q group by deptno order by count(*)
{code}
The validator is doing a rewrite on the SqlOrderBy and is adding a wrapper
SqlSelect. But its result, "select * from (...) order by count(*)" is not
valid. We should instead generate "select * from (...) order by 1".
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