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  1. Derby
  2. DERBY-5241

The = and <> operators should be supported on CLOBs.

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Details

    • Bug
    • Status: Open
    • Major
    • Resolution: Unresolved
    • 10.9.1.0
    • None
    • SQL
    • Normal
    • Repro attached
    • Deviation from standard

    Description

      According to the 2008 SQL Standard, part 2, section 4.2.1, the = and <> operators should be supported when comparing CLOBs. The following script shows this defect:

      connect 'jdbc:derby:memory:db;create=true';

      create table t( a clob, b clob );

      select * from t where a = b;
      select * from t where a <> b;

      A partial workaround would be to cast the CLOBs as VARCHAR( 32672 ). This would work for small CLOBs.

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. DERBY-6185 Query against view with "where name LIKE 'Col1' ESCAPE '\' " failed

          • Major - Major loss of function.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. DERBY-5235 Remove the artificial limit on the length of VARCHAR values, allowing them to be java.lang.Integer.MAX_VALUE long

          • Major - Major loss of function.
          • Open

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              Unassigned Unassigned
              rhillegas Richard N. Hillegas
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              Dates

                Created:
                Updated: