[FB-Tracker] Created: (CORE-5558) Incorrect result set (missing records) may be returned by the ORDER BY query navigating on an index

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[FB-Tracker] Created: (CORE-5558) Incorrect result set (missing records) may be returned by the ORDER BY query navigating on an index

JIRA tracker@firebirdsql.org
Incorrect result set (missing records) may be returned by the ORDER BY query navigating on an index
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                 Key: CORE-5558
                 URL: http://tracker.firebirdsql.org/browse/CORE-5558
             Project: Firebird Core
          Issue Type: Bug
          Components: Engine
    Affects Versions: 2.5.6
            Reporter: Marcel Portner
         Attachments: sql_asc.jpg, sql_desc.jpg

I had a database where the result set are incorrect, when the query use an ORDER BY ASC. On this TITITELTHEMA field it has an ascending index.
After a backup/restore everything worked again correctly.
In the firebird.log no error entry is available.
I think the index is in this case corrupt.
Is this problem known?


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