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https://issues.apache.org/jira/browse/DERBY-3231?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12562167#action_12562167
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Kathey Marsden commented on DERBY-3231:
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I think I'll port this to 10.3 since it is a regression fix. Please let me
know if you see any problem with porting it to 10.3.
> Sorting on COUNT with OR and GROUP BY delivers wrong results.
> -------------------------------------------------------------
>
> Key: DERBY-3231
> URL: https://issues.apache.org/jira/browse/DERBY-3231
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.3.1.4
> Environment: Eclipse 3.2.2; java 1.5.0_11;
> Reporter: Peter Balon
> Assignee: Manish Khettry
> Priority: Critical
> Attachments: d3231_v2.patch, order_by_bug.diff.txt
>
>
> The result of the select is not sorted in "order by COUNT(*) DESC" or "order
> by COUNT(*) ASC"
> create table yy (a double, b double);
> insert into yy values (2, 4);
> insert into yy values (5, 7);
> insert into yy values (2, 3);
> insert into yy values (2, 3);
> insert into yy values (2, 3);
> insert into yy values (2, 3);
> insert into yy values (9, 7);
> select b, COUNT(*) AS "COUNT_OF", SUM(b) AS "sum b"
> from yy
> where a = 5 or a = 2
> group by b
> order by COUNT(*) asc
> -- same result as:
> select b, COUNT(*) AS "COUNT_OF", SUM(b) AS "sum b"
> from yy
> where a = 5 or a = 2
> group by b
> order by COUNT(*) desc
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