计算2个日期之间的百分比

Question

我想计算两个日期（LeaseStart＆amp; Lease End）之间的完成百​​分比。

当前％显示图像中的％Perentage列只是一个演示数据。

在第4行，它显示100％，因为租约结束日期是今年4月，我今天就跑了。

因此，每当我根据今天运行此报告时，系统应计算LeaseStart＆amp; LeaseEnd日期并显示％。

请帮忙

由于

Answer 1

DECLARE @table as TABLE(SR INT,LeaseStart DATE,LeaseEnd DATE)

INSERT INTO @table VALUES
(1,'2017-01-01','2021-12-31'),
(2,'2016-10-01','2017-12-31'),
(3,'2013-07-29','2018-06-30'),
(4,'2016-09-13','2017-04-07')


SELECT SR,LeaseStart,LeaseEnd,
DATEDIFF(DAY,LeaseStart,CASE WHEN GETDATE()<LeaseEnd THEN GETDATE() ELSE LeaseEnd END) DaysSoFar, 
DATEDIFF(DAY,LeaseStart,LeaseEnd) TotalLease,  
CAST((DATEDIFF(DAY,LeaseStart,CASE WHEN GETDATE()<LeaseEnd THEN GETDATE() ELSE LeaseEnd END)*1.00)/
(DATEDIFF(DAY,LeaseStart,LeaseEnd)*1.00)*100.00 AS DECIMAL(6,2)) AS Percentage
FROM @table

将结果

Answer 2

不确定我同意您显示的结果，但请考虑以下

示例

Declare @YourTable table (SRNo int,LeaseStart date,LeaseEnd date)
Insert Into @YourTable values
 (1,'2017-01-01','2021-12-31')
,(2,'2016-10-01','2017-12-31')
,(3,'2013-07-29','2018-03-30')
,(4,'2016-09-13','2017-04-07')
,(5,'2017-02-01','2019-01-31')

Select SRNo 
      ,Pct  = (DateDiff(DAY,LeaseStart,IIF(GetDate()>=LeaseEnd,LeaseEnd,GetDate()))*100.0)/DateDiff(DAY,LeaseStart,LeaseEnd)
From  @YourTable

<强>返回

SRNo    Pct
1       10.520547945205
2       62.280701754385
3       84.692082111436
4       100.000000000000
5       22.085048010973