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  1. MariaDB Connector/J
  2. CONJ-535

BIT(1) data type value is different when using ResultSet.getShort() and PreparedStatement/Statement

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    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 1.4.5, 1.5.9, 1.6.0, 1.6.4, 1.6.5
    • Fix Version/s: 2.2.0, 1.7.0
    • Component/s: Other
    • Labels:
      None

      Description

      A while ago we did JDBC driver upgrade from 1.4.5 to 1.6.4 and noticed an issue when using getShort-method for BIT(1) data type.

      After closer inspection we wrote a test which returns the value using different methods and using PreparedStatement/Statement. Other ResultSet methods (getString, getObject, getByte, getBoolean) return the correct result (0/1), but getShort()-method produces strange results.

      I am not familiar with MariaDB JDBC driver internal logic, but it seems this has to do something with text/binary protocol detection.

      Driver version 1.4.5/1.5.9, using PreparedStatement:
      BIT(1) field value in database 0, getShort returns 0
      BIT(1) field value in database 1, getShort returns 1

      Driver version 1.4.5/1.5.9, using Statement:
      BIT(1) field value in database 0, getShort returns -48
      BIT(1) field value in database 1, getShort returns -47

      Driver version 1.6.0/1.6.4/1.6.5, using PreparedStatement:
      BIT(1) field value in database 0, getShort returns -48
      BIT(1) field value in database 1, getShort returns -47

      Driver version 1.6.0/1.6.4/1.6.5, using Statement:
      BIT(1) field value in database 0, getShort returns -48
      BIT(1) field value in database 1, getShort returns -47

      MariaDB server information:
      version 10.1.26-MariaDB
      version_comment MariaDB Server
      version_compile_machine x86_64
      version_compile_os Linux

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            Assignee:
            diego dupin Diego Dupin
            Reporter:
            juharasa Juha Räsänen
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              Created:
              Updated:
              Resolved: