將兩行數值合併爲一個

Question

任何人都可以請告訴我如何顯示兩行值，兩行不同列值兩列。下面是表：

---

Test ID  Total Employees Response Score  Eval Score 
1    7     4.24    0 
1    7      0    4.78 
2    13     4.52    0 
2    13      0    4.89 

---

所以我要尋找的輸出：

---

Test ID  Total Employees Response Score  Eval Score 
1    7     4.24    4.78 
2    13     4.52    4.89 

---

Answer 1

可以使用聚合函數與GROUP BY得到結果：

select TestId, 
    totalEmployees, 
    max(ResponseScore) responseScore, 
    max(EvalScore) EvalScore 
from yourTable 
group by TestId, totalEmployees; 

Answer 2

select [Test ID], 
     [Total Employees], 
     max([Response Score]) as [Response Score], 
     max([Eval Score]) as [Eval Score] 
from your_table 
group by [Test ID], [Total Employees]