獲取同一列多行的總金額和總兩個不同行（MySQL查詢）

Question

我有一個表「記載」的 [記錄] [1]

select typeofservice, 
     Coalesce(sum(incomecost,expensecost),0) 'incomecost,expensecost' 
from records 
where dateoftrans = '2016-11-22' 
group by typeofservice with rollup; 

我希望能夠有在第二個圖像上的結果，這是我的查詢......所有這些交易發生在一天。請幫助

https://i.stack.imgur.com/fLYav.png

Answer 1

如果只對第二圖像的結果，你可以嘗試sum(incomecost)和sum(expensecost)這樣的：

SELECT 
    typeofservice, 
    Coalesce(SUM(incomecost), 0) AS incomecost, 
    Coalesce(SUM(expensecost), 0) AS expensecost 
FROM records 
GROUP BY typeofservice 
WITH ROLLUP 

Answer 2

下面的查詢假設，對於給定類型的服務，你希望在收入成本的總和超過費用成本的總和報告的收入，反之亦然。在每種情況下，收入和費用之間的差額報告在相應的欄中，NULL在備用欄中報告。

SELECT typeofservice, 
     CASE WHEN SUM(incomecost) - SUM(expensecost) > 0 
      THEN SUM(incomecost) - SUM(expensecost) 
      ELSE NULL END AS incomecost, 
     CASE WHEN SUM(expensecost) - SUM(incomecost) > 0 
      THEN SUM(expensecost) - SUM(incomecost) 
      ELSE NULL END AS expensecost 
FROM records 
WHERE dateoftrans = '2016-11-22' 
GROUP BY typeofservice 
WITH ROLLUP