它不应该显示计数，它应该显示 1，因为这个查询要么失败要么结果只有一个排.如果您想知道表中存在多少行 dark_souls2_widgets 那么您可以使用

It shouldn't show the count, it should show 1, cause this query will either fail or the result will have just one row. If you want to know how many rows exists in your table dark_souls2_widgets then you could do this with

res = stmt->getResultSet();

while (res->next()) {
  cout << res->getInt(1); // getInt(1) returns the first column
}