Question

根据当前日期，我需要在WHERE条件中设置案例。

select 
    count(id) 
from 
    table1
case 
   when (DAY(GETDATE())) between 1 and 15 
      Then created_date between (getdate()-DAY(GETDATE())+1) and (getdate()+15-DAY(GETDATE()))
   else created_date between (getdate()+16-DAY(GETDATE())) and (getdate()+31-DAY(GETDATE()))
  End

但它对我不起作用。

例如，

表1：

Id   App_Name  Created_Date
1     app1     2016-12-05
2     app2     2016-12-10
3     app3     2016-12-16
4     app4     2016-12-25
5     app5     2016-12-28

今天的日期是2016-12-15，所以我需要在2016-12-01到2016-12-15之间采取created_date。

预期输出为＆＃34; 2＆＃34;

Answer 1

您可以尝试使用嵌套的CASE表达式以及条件聚合：

SELECT CASE WHEN DAY(GETDATE()) <= 15 THEN
            SUM(CASE WHEN created_date BETWEEN (getdate()-DAY(GETDATE())+1) AND
                                               (getdate()+15-DAY(GETDATE()))
                     THEN 1 ELSE 0 END)
            ELSE
            SUM(CASE WHEN created_date BETWEEN (getdate()+16-DAY(GETDATE())) AND
                                               (getdate()+31-DAY(GETDATE()))
                     THEN 1 ELSE 0 END)
       END AS summary
FROM table1

Answer 2

这样做的简单方法。工作完美。试一次

SELECT CASE 
     WHEN (DAY(GETDATE())) < 16 THEN
        (Select Count(1) from SEP_RetailStore WITH (NOLOCK) WHERE DAY(CreateDate) BETWEEN 1 and 15)
        ELSE (Select Count(1) from SEP_RetailStore WITH (NOLOCK) WHERE DAY(CreateDate) >= 16)
     END

基于当前日期的SQL Server需要检查WHERE条件中的日期范围

2 个答案: