Hi All
We had in the past many cases in which the search engine returned duplicate
records.
Most of those cases are not simple to resolve in the DB layer by changing the
query due to schema limitations.
We had decided to handle that by adding DISTINCT to the queries that the search
engine generates [1]
However, we might have cases in which both DISTINCT and ORDER BY f({args})
(where f is a function call) is used
In that case, we will get SQL exception since the ORDER BY is applied on the
DISTINCT result that does not include f as a field.
I had prevented using DISTINCT in such cases [2]
That means that you still may got duplicates in such cases and then you should
handle it in the same method as in [3]
(basically returning the function result in the select as a computed field)
[1] https://gerrit.ovirt.org/#/c/31896
[2] https://gerrit.ovirt.org/#/c/38459
[3] https://gerrit.ovirt.org/#/c/36946
Thanks
Eli Mesika
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