Method is_strict_mode

sql/sql_class.h:2238–2242

      (MODE_NO_ZERO_IN_DATE | MODE_NO_ZERO_DATE | MODE_INVALID_DATES);
  }
  inline bool is_strict_mode() const
  {
    return MY_TEST(variables.sql_mode & (MODE_STRICT_TRANS_TABLES |
                                         MODE_STRICT_ALL_TABLES));
  }
  inline time_t query_start()
  {
    query_start_used= 1;