Function list_fields_send_default

sql/sql_prepare.cc:6233–6251

static void
list_fields_send_default(THD *thd, Protocol_local *p, Field *fld, uint pos)
{
  char buff[80];
  String tmp(buff, sizeof(buff), default_charset_info), *res;
  MYSQL_FIELD *client_field= &p->cur_data->embedded_info->fields_list[pos];

  if (fld->is_null() || !(res= fld->val_str(&tmp)))
  {
    client_field->def_length= 0;
    client_field->def= strmake_root(&p->cur_data->alloc, "", 0);
  }
  else
  {
    client_field->def_length= res->length();
    client_field->def= strmake_root(&p->cur_data->alloc, res->ptr(),
                                    client_field->def_length);
  }
}


bool Protocol_local::send_list_fields(List<Field> *list, const TABLE_LIST *table_list)