Question

我有两个非常相似的SQL查询，它们返回在不同工作区上花费的分钟数。

是否可以将它们压缩成一个查询？

所需参数：

显示当月（1月的IE 1，4月的4）将两个查询的总分钟数显示在一个查询中。

以下是我目前的查询：

SELECT SUM(r.Minutes_Spent) AS 'Custom Programming and Consulting'
FROM TK_Project p
INNER JOIN TK_Task t
ON p.Project_ID = t.Project_ID JOIN TK_Time_Record r
ON t.ID = r.Task_ID
WHERE p.Company = 162
AND p.Name ='Technical Support'
AND r.Work_Date BETWEEN  '04/01/2001'  AND  '04/30/2012'
AND r.Type NOT LIKE '%non%'
AND (r.Type = 'Programming-Billable' OR r.Type = 'Consulting-Billable')

SELECT SUM(r.Minutes_Spent) AS 'Tech. Support / Data Maint. / Training'
FROM TK_Project p
INNER JOIN TK_Task t
ON p.Project_ID = t.Project_ID JOIN TK_Time_Record r
ON t.ID = r.Task_ID
WHERE p.Company = 162
AND p.Name ='Technical Support'
AND r.Work_Date BETWEEN  '04/01/2001'  AND  '04/30/2012'
AND r.Type NOT LIKE '%non%'
AND (r.Type = 'Data Maintenance' OR r.Type = 'Tech Support-Billable' OR r.Type = 'Training')

以下是他们提供的数据：

Custom Programming and Consulting
90

Tech. Support / Data Maint. / Training
105

是否可以将上述查询推送到一个查询中并返回以下数据：

Month      Custom Programming and Consulting      Tech. Support / Data Maint. / Training
  4                    90                                           105

月份需要显示查询这一部分的当前月份：

AND r.Work_Date BETWEEN  '04/01/2001'  AND  '04/30/2012'

我不确定实现这一目标的最佳方法。我需要这个月，因为下一部分我需要将其升级为从今天起12个月后才能获得图形条形图报告。

Answer 1

是的。。。您只需要在SELECT子句中使用case语句按照您需要的方式对值进行分组：

SELECT 
  SUM(case 
        when r.Type in ('Programming-Billable', 'Consulting-Billable')
        then r.Minutes_Spent
        end) AS "Custom Programming and Consulting",
  SUM(case 
        when (r.Type in ('Data Maintenance', 'Tech Support-Billable', 'Training')
        then r.Minutes_Spent
        end) AS "Tech. Support / Data Maint. / Training"
FROM TK_Project p 
INNER JOIN TK_Task t
  ON p.Project_ID = t.Project_ID 
JOIN TK_Time_Record r
  ON t.ID = r.Task_ID
WHERE p.Company = 162 
  AND p.Name ='Technical Support' 
  AND r.Work_Date BETWEEN  '04/01/2001'  AND  '04/30/2012' 
  AND r.Type NOT LIKE '%non%'

SQL Query压缩

1 个答案: