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From Øystein Grøvlen (JIRA) <j...@apache.org>
Subject [jira] Created: (DERBY-2923) Incorrect reading of nullable Blob/Clob columns during soft upgrade with client/server
Date Wed, 11 Jul 2007 12:54:04 GMT
Incorrect reading of nullable Blob/Clob columns during soft upgrade with client/server
--------------------------------------------------------------------------------------

                 Key: DERBY-2923
                 URL: https://issues.apache.org/jira/browse/DERBY-2923
             Project: Derby
          Issue Type: Bug
          Components: Network Server
    Affects Versions: 10.3.0.0, 10.3.1.0, 10.3.1.1
         Environment: Client/server soft upgrade
            Reporter: Øystein Grøvlen
            Assignee: Øystein Grøvlen
            Priority: Blocker
             Fix For: 10.3.1.1


Select operations with client/server and soft upgrade mode will not see first byte of the
Blob/Clob if the LOB column is nullable.

The reason seems to be that during soft upgrade, the network server does not prepend the LOB
data with the byte indicating whether the column is null or not.  Hence, the first data byte
will be interpreted by the client as the null byte, and the reading of the LOB will start
at the second byte.

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