Commits on Mar 20, 2023

1. [MDEV-30824] Fix binlog to use 'String' for setting 'character_set_cl… …

   …ient'
   
   Commit a923d6f disabled numeric setting
   of character_set_* variables with non-default values:
   
     MariaDB [(none)]> set character_set_client=224;
     ERROR 1115 (42000): Unknown character set: '224'
   
   However the corresponding binlog functionality still write numeric
   values for log event, and this will break binlog replay if the value is
   not default. Now make the server use 'String' type for
   'character_set_client' when generating binlog events
   
   Before:
   
     /*!\C utf8mb4 *//*!*/;
     SET @@session.character_set_client=224,@@session.collation_connection=224,@@session.collation_server=33/*!*/;
   
   After:
   
     /*!\C utf8mb4 *//*!*/;
     SET @@session.character_set_client=utf8mb4,@@session.collation_connection=33,@@session.collation_server=8/*!*/;
   
   Note: prior to the previous commit, setting with '224' or '45' or
   'utf8mb4' have the same effect, as they all set the parameter to
   'utf8mb4'.
   
   All new code of the whole pull request, including one or several files
   that are either new files or modified ones, are contributed under the
   BSD-new license. I am contributing on behalf of my employer Amazon Web
   Services, Inc.

   

   PhysicsTing committed Mar 20, 2023
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