Benjamin Geer created JENA-1856:
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Summary: Unexpected results with GROUP_BY and GROUP_CONCAT
Key: JENA-1856
URL: https://issues.apache.org/jira/browse/JENA-1856
Project: Apache Jena
Issue Type: Question
Components: Jena
Affects Versions: Jena 3.14.0
Reporter: Benjamin Geer
Attachments: query-with-group-concat.txt,
query-without-group-concat.txt, test-data.txt
Attached is:
* some example data
* a query that works as I expected, without {{GROUP BY}}
* the same query with {{GROUP BY}} and {{GROUP_CONCAT}} added, which doesn't
work as I expected
Am I doing something wrong, or is this a bug?
Using the query without {{GROUP BY}}, I get these results as expected:
||thing||decimal||boolean||
|<http://example.org/data/a>| |<http://example.org/data/a/values/2>|
|<http://example.org/data/b>| |<http://example.org/data/b/values/2>|
|<http://example.org/data/b>|<http://example.org/data/b/values/1>| |
Using the query with {{GROUP BY}} and {{GROUP_CONCAT}}, I expected to get:
||thing||decimal__Concat||boolean__Concat||
|<http://example.org/data/a>| |<http://example.org/data/a/values/2>|
|<http://example.org/data/b>|<http://example.org/data/b/values/1>|<http://example.org/data/b/values/2>|
But instead I get:
||thing||decimal__Concat||boolean__Concat||
|<http://example.org/data/a>| |<http://example.org/data/a/values/2>|
|<http://example.org/data/b>| | |
Should I be doing something different to get the results I expected?
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