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  1. MariaDB Server
  2. MDEV-7366

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

        Details

        • Type: Bug
        • Status: Closed
        • Priority: Major
        • Resolution: Fixed
        • Affects Version/s: 10.0.14, 10.0.15
        • Fix Version/s: 10.0.16
        • Component/s: Character Sets
        • Labels:
          None

          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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                    • Created:
                      Updated:
                      Resolved: