When running in sql_mode=ORACLE, MariaDB should understand predefined exception names.

BEGIN

  ...

EXCEPTION

  WHEN TOO_MANY_ROWS THEN ...

  WHEN NO_DATA_FOUND THEN ...

  WHEN OTHERS THEN NULL;

END;

The most widely used predefined exceptions were implement under terms of MDEV-10839 and MDEV-10582.
This tasks is for the remaining less important exceptions:

• ACCESS_INTO_NULL
• CASE_NOT_FOUND
• COLLECTION_IS_NULL
• CURSOR_ALREADY_OPEN
• INVALID_NUMBER
• LOGIN_DENIED
• NOT_LOGGED_ON
• PROGRAM_ERROR
• ROWTYPE_MISMATCH
• SELF_IS_NULL
• STORAGE_ERROR
• SUBSCRIPT_BEYOND_COUNT
• SUBSCRIPT_OUTSIDE_LIMIT
• SYS_INVALID_ROWID
• TIMEOUT_ON_RESOURCE
• VALUE_ERROR
• ZERO_DIVIDE