[jira] Created: (OPENJPA-1841) Do not generate IS NULL and IS NOT NULL clause for blob / clob types on Sybase

[Michael Dick (JIRA)]

Do not generate IS NULL and IS NOT NULL clause for blob / clob types on Sybase
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                 Key: OPENJPA-1841
                 URL: https://issues.apache.org/jira/browse/OPENJPA-1841
             Project: OpenJPA
          Issue Type: Bug
          Components: jdbc
    Affects Versions: 2.1.0
            Reporter: Michael Dick
            Assignee: Michael Dick
             Fix For: 2.1.0


Sybase does not allow it's clob / blob types (TEXT and IMAGE respectively) to 
be used with the IS NULL and IS NOT NULL clauses. 

Instead we should use the datalength() function to determine if the column has 
any data. 

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