Oracle SQL：如果其他屬性的值爲空時如何彙總值，以及何時彙總爲非定值然後計算百分比

Question

我有薪水錶和屬性，僱主可以獲得額外獎金（是值）。 我想計算沒有exta獎金的僱主的總和（工資）以及工資和獎金的總和。 表屬性是

id salary  extra_bonus 
--- ------- ----------- 
1 1200  yes 
2 900 
3 1300 
4 800  yes 
5 1100  yes 

我想報告類似的

sumsalary sumextrabonussalary percent 
--------- ------------------- ------- 
3100  2100     67,7% 

Answer 1

這是一個很長一段時間，因爲我已經與Oracle合作，但我認爲，這應該工作：

SELECT 
    SUM(CASE WHEN extra_bonus = 'yes' THEN 0 ELSE salary END) As sumsalary, 
    SUM(CASE WHEN extra_bonus = 'yes' THEN salary ELSE 0 END) AS sumextrabonussalary, 
    SUM(CASE WHEN extra_bonus = 'yes' THEN salary ELSE 0 END)/ 
    SUM(CASE WHEN extra_bonus = 'yes' THEN 0 ELSE salary END) AS percent 
FROM 
    My_Table 

Answer 2

SELECT SUM(CASE when extra_bonus = 'yes' THEN NULL ELSE salary END) AS sumsalary, 
     SUM(CASE when extra_bonus = 'yes' THEN salary END) AS sumextrabonussalary, 
     SUM(CASE when extra_bonus = 'yes' THEN NULL ELSE salary END) 
    /SUM(CASE when extra_bonus = 'yes' THEN salary END) 
     * 100 AS percent 
FROM your_table; 

Answer 3

使用條件聚集和子查詢背後FROM

SELECT sumsalary, sumextrabonussalary, sumsalary/sumextrabonussalary * 100 as Percent 
FROM 
(
    SELECT SUM(CASE WHEN extra_bonus IS NULL THEN salary END) AS sumsalary, 
      SUM(CASE WHEN extra_bonus = 'yes' THEN salary END) AS sumextrabonussalary 
    FROM yourtable 
) t