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  1. MariaDB Server
  2. MDEV-11497

Wrong result for (int_expr IN (mixture of signed and unsigned expressions))

    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 5.5, 10.0, 10.1, 10.2, 10.3
    • Fix Version/s: 10.3.0
    • Component/s: OTHER
    • Labels:

      Description

      This script:

      DROP TABLE IF EXISTS t1;
      CREATE TABLE t1 (a BIGINT, b BIGINT UNSIGNED);
      INSERT INTO t1 VALUES (-9223372036854775808,18446744073709551615);
      SELECT * FROM t1 WHERE -1 IN (a,b);
      

      erroneously returns the row:

      +----------------------+----------------------+
      | a                    | b                    |
      +----------------------+----------------------+
      | -9223372036854775808 | 18446744073709551615 |
      +----------------------+----------------------+
      

      If I now change the left argument to DECIMAL or DOUBLE, it starts to work fine and return an empty set:

      SELECT * FROM t1 WHERE -1.0 IN (a,b);
      SELECT * FROM t1 WHERE -1e0 IN (a,b);
      

      CASE suffers from the same problem. See MDEV-11554.

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              • Assignee:
                bar Alexander Barkov
                Reporter:
                bar Alexander Barkov
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                Dates

                • Created:
                  Updated:
                  Resolved: