Method check_charset_collation_map_version

sql/sql_prepare.cc:320–331

  THD::used_t m_prepare_time_thd_used_flags;
  uint m_prepare_time_charset_collation_map_version;
  bool check_charset_collation_map_version(THD *thd,
                                           Reprepare_observer *observer)
  {
    if ((m_prepare_time_thd_used_flags & THD::CHARACTER_SET_COLLATIONS_USED) &&
        m_prepare_time_charset_collation_map_version !=
        thd->variables.character_set_collations.version())
    {
      observer->report_error(thd);
      return true;
    }
    return false;
  }
private:
  bool set_db(const LEX_CSTRING *db);
  bool set_parameters(String *expanded_query,