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  1. MariaDB ColumnStore
  2. MCOL-4671

LEFT(str, negativeInt) returns a wrong result

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    Details

    • Type: Bug
    • Status: Open (View Workflow)
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 5.6.1, 6.1.1
    • Fix Version/s: 6.3.1
    • Component/s: PrimProc
    • Labels:
      None

      Description

      DROP TABLE IF EXISTS t1;
      CREATE TABLE t1 (a TINYINT) ENGINE=ColumnStore;
      INSERT INTO t1 VALUES (-1);
      SELECT LEFT('abc',a) FROM t1;
      

      +---------------+
      | LEFT('abc',a) |
      +---------------+
      | abc           |
      +---------------+
      

      Looks wrong. The expected result is:

      DROP TABLE IF EXISTS t1;
      CREATE TABLE t1 (a TINYINT) ENGINE=InnoDB;
      INSERT INTO t1 VALUES (-1);
      SELECT LEFT('abc',a) FROM t1;
      

      +---------------+
      | LEFT('abc',a) |
      +---------------+
      |               |
      +---------------+
      

      The same problem is repeatable with functions:

      DROP TABLE IF EXISTS t1;
      CREATE TABLE t1 (a TINYINT) ENGINE=ColumnStore;
      INSERT INTO t1 VALUES (-1);
      SELECT LEFT('abc',COALESCE(a,a)) FROM t1;
      

      +---------------------------+
      | LEFT('abc',COALESCE(a,a)) |
      +---------------------------+
      | abc                       |
      +---------------------------+
      

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              Assignee:
              bar Alexander Barkov
              Reporter:
              bar Alexander Barkov
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                Dates

                Created:
                Updated:

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