致命錯誤:未收集異常'異常'消息'錯誤:子查詢返回多於1行 錯誤No:1242 SELECT o.order_id,CONCAT(o.firstname,'',o.lastname)AS customer,(SELECT os.name FROM ocny_order_status os WHERE os.order_status_id = o.order_status_id AND os.lan
我有一個名爲Team的類。 class Team
{
public Team(string name)
{
this.Name = name;
this.Wins = 0;
this.Opponents = new HashSet<Team>();
}
public string Name { get;