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  1. MariaDB Server
  2. MDEV-7366

SELECT 'a' = BINARY 'A' returns 1 (utf8 charset, utf8_unicode_ci collation)

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    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 10.0.14, 10.0.15
    • Fix Version/s: 10.0.16
    • Component/s: Character Sets
    • Labels:
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      Description

      In MariaDB 10.0.14 and higher, the following expressions return inconsistent values.

      SET NAMES utf8 COLLATE utf8_unicode_ci; 
      SELECT 'a' = BINARY 'A'; /* yields 1, expected 0 */
      SELECT BINARY 'A' = 'a'; /* yields 0, expected 0 */

      The problem occurs when 'a' has a case insensitive utf8 collation.
      MariaDB 10.0.13 does yield 0 in both cases.

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            Assignee:
            bar Alexander Barkov
            Reporter:
            Pim Pim Broekhof
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              Updated:
              Resolved: