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  1. MariaDB Server
  2. MDEV-28067

Multiple conflicting column COLLATE clauses are not rejected

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    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 10.2, 10.3, 10.4, 10.5, 10.6, 10.7, 10.8, 10.9
    • Fix Version/s: 10.9.0
    • Component/s: Character Sets, Data types
    • Labels:
      None

      Description

      If I specify mutiple conflicting COLLATE clauses on the column level, no error is raised:

      CREATE OR REPLACE TABLE t1 (a CHAR(10) COLLATE latin1_swedish_ci NOT NULL COLLATE latin1_bin);
      SHOW CREATE TABLE t1;
      

      +-------+----------------------------------------------------------------------------------------------------------------------------+
      | Table | Create Table                                                                                                               |
      +-------+----------------------------------------------------------------------------------------------------------------------------+
      | t1    | CREATE TABLE `t1` (
        `a` char(10) CHARACTER SET latin1 COLLATE latin1_bin NOT NULL
      ) ENGINE=InnoDB DEFAULT CHARSET=latin1 |
      +-------+----------------------------------------------------------------------------------------------------------------------------+
      

      Notice, the first COLLATE was ignored, the last COLLATE was used.

      The same problem is repeatable on the table level. See MDEV-28117.

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              Assignee:
              bar Alexander Barkov
              Reporter:
              bar Alexander Barkov
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                Dates

                Created:
                Updated:
                Resolved:

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