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  1. MariaDB Server
  2. MDEV-6686

MariaDB crashed with CONNECT (ODBC to MSSQL) - collation issue

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      Hello,

      when i create CONNECT table (example below) with ODBC to MSSQL and i set "CHARSET=utf8", table is created properly. But after "SELECT * FROM sample_product", after 2-3 seconds MariaDB crashed with "Uknown error". I need to start MariaDB service again. In MariaDB log is nothing relevant.

      After debugging i find out, that crash is based on different collations. In MSSQL table is collation "Czech_CI_AS" and in it's char-columns are some Czech-specific characters, for example "čšěíů".

      Solution: when i changed CHARSET to "cp1250", everythings works great.

      It's OK - i don't expect explicit convert from cp1250 to utf8. But expect, that server throws an error about collations and not crash

      Thank you.

      CREATE TABLE sample_product (
      col1 varchar(100) NOT NULL,
      col2 varchar(100) NOT NULL
      )
      ENGINE=CONNECT CHARSET=utf8 CONNECTION='DSN=XXX;UID=XXX;PWD=XXX' table_type=odbc srcdef='SELECT col1, col2 FROM [test].[test]';

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            Assignee:
            bertrandop Olivier Bertrand
            Reporter:
            jan.reges Ján Regeš
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