Derby
  1. Derby
  2. DERBY-5236

Client driver silently truncates strings that exceed 32KB

    Details

    • Type: Bug Bug
    • Status: Closed
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: 10.8.1.2
    • Fix Version/s: 10.8.2.2, 10.9.1.0
    • Component/s: Network Client
    • Labels:
      None
    • Issue & fix info:
      Repro attached
    • Bug behavior facts:
      Embedded/Client difference, Wrong query result

      Description

      Can be seen with this JUnit test case that retrieves a VARCHAR value with 20000 characters. With the client driver, the string is truncated to 10900 characters (32700 bytes when encoded in UTF-8).

      public void testLongColumn() throws SQLException

      { PreparedStatement ps = prepareStatement( "values cast(? as varchar(20000))"); char[] chars = new char[20000]; Arrays.fill(chars, '\u4e10'); String str = new String(chars); ps.setString(1, str); JDBC.assertSingleValueResultSet(ps.executeQuery(), str); }
      1. d5236-1a-client-fetch-complete.diff
        14 kB
        Knut Anders Hatlen
      2. d5236-2a-longer-strings.diff
        10 kB
        Knut Anders Hatlen
      3. d5236-3a-warning.diff
        26 kB
        Knut Anders Hatlen
      4. d5236-4a-client-compatibility.diff
        4 kB
        Knut Anders Hatlen
      5. d5236-4b.diff
        4 kB
        Knut Anders Hatlen
      6. d5236-5a-fix-version-check.diff
        1 kB
        Knut Anders Hatlen
      7. repro.diff
        3 kB
        Knut Anders Hatlen
      8. write-full-string.diff
        3 kB
        Knut Anders Hatlen

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            People

            • Assignee:
              Knut Anders Hatlen
              Reporter:
              Knut Anders Hatlen
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              Dates

              • Created:
                Updated:
                Resolved:

                Development