如何總結sql語句

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SELECT sum(l.interestrt*d.bidspotrate) AS [Interest Rate in MYR], 
     SUM (l.interestsprd * d.bidspotrate), sum(l.penaltyrt*d.bidspotrate) 
FROM loan l, 
    danadb d

如何總結上面的所有sql語句？我不知道如何總結不同的列。謝謝。如何總結sql語句

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2016-12-05 mir

在這個問題上你可以找到十幾種在線解決方案。 – Susang

你有沒有想過簡單地添加值？ – aaaaaa123456789

'+'一個魔術師這麼做:-) –

這是怎麼回事？

SELECT SUM (L.INTERESTRT * D.BIDSPOTRATE) AS "Interest Rate in MYR", 
     SUM (L.INTERESTSPRD * D.BIDSPOTRATE), 
     SUM (L.PENALTYRT * D.BIDSPOTRATE) 
    FROM LOAN L CROSS JOIN DANADB D

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2016-12-05 06:34:40

謝謝你回答:)，但是你剛剛給出的查詢與我的結果一樣。 – mir

@Mir試試這個

(select sum(l.interestrt*d.bidspotrate) as 'Val1', 
    SUM (l.interestsprd * d.bidspotrate) as 'Val2', 
    sum(l.penaltyrt*d.bidspotrate) as 'Val3' , 
    (SUM(Val1) + SUM(Val2) + SUM(Val3)) as 'Total' 
from loan l inner join danadb d on l.someid = d.someid

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2016-12-05 06:40:07

謝謝你回答:)，但是在運行你的查詢的時候出現了錯誤，在第4行說val1，val2和val3的列名無效。 – mir

你可以試試這個，它會給你你所期望的輸出：

select (one+two+three) as [Interest Rate in MYR] from 
(select sum(l.interestrt*d.bidspotrate) as [one] 
    SUM (l.interestsprd * d.bidspotrate) as [two], 
    sum(l.penaltyrt*d.bidspotrate) as [three] 
from loan l,danadb d) t

select (sum(l.interestrt*d.bidspotrate)+ 
    SUM (l.interestsprd * d.bidspotrate)+ 
    sum(l.penaltyrt*d.bidspotrate)) as [Interest Rate in MYR] 
from loan l,danadb d

注意：你可以擺脫這些老式的加入和我從表格中共用一列來填充：

FROM loan l 
INNER JOIN danadb d ON d.<id> = l.<id>

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2016-12-05 06:42:29 Susang

我得到了結果。非常感謝：）。祝你有美好的一天：D – mir

再次感謝你。第二個查詢也產生相同的結果:) – mir

也許只是添加它們？

SELECT SUM (L.INTERESTRT * D.BIDSPOTRATE) 
     + SUM (L.INTERESTSPRD * D.BIDSPOTRATE) 
     + SUM (L.PENALTYRT * D.BIDSPOTRATE) 
      AS "Interest Rate in MYR" 
    FROM LOAN L CROSS JOIN DANADB D

來源

2016-12-05 08:52:57

哦，是的，我根本沒有考慮它。該查詢產生我想要的結果。再次感謝你：） – mir

如何總結sql語句

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