SQL加入2表一起指揮

Question

我有2個表上面列出，我想通過目前球隊的名字到播放器表的Previous_Club列。我將登錄的Team用戶的Team_ID設置爲會話變量，因此我試圖使用此查詢Teams_Name，然後將其傳遞給Player到Previous_Club列中。但它保持錯誤。你可以看到下面的sql命令。

SqlCommand cmd2 = new SqlCommand("UPDATE Player SET Previous_Club = Team_Name FROM (SELECT Team_Name FROM TEAM WHERE Team_ID = @Team_ID)", con); 

Answer 1

試試這個;

SqlCommand cmd2 = new SqlCommand("UPDATE Player SET Previous_Club = (SELECT Team_Name FROM TEAM WHERE Team_ID = @Team_ID)", con); 

Answer 2

查詢Error..Try這個

UPDATE Player 
SET Previous_Club = (SELECT Team_Name FROM TEAM WHERE Team_ID = @Team_ID)