Question

我在where子句中有两列可供选择，两列都是日期列。 Date1和Date2。

我满足这些条件。

When @temp1= 1 and @temp2= 0 then Date1 between (@startdate and @enddate)
When @temp1= 0 and @temp2= 1 then between (@startdate and @endDate)
when @temp1= 1 and @temp2 =1 then Date1 between (@startDate and @endDate) and Date2 between (@startdate and @endDate)

我必须写这样的东西

Case when @temp1 = 1 then Date1 between  (@startdate and @enddate) 
     when @temp2 = 1 then Date2 between  (@startdate and @enddate) 
     when @temp1 = 1 and @temp2 = 1 then (Date1 between  (@startdate and @enddate) and  Date2 between  (@startdate and @enddate)

请提前帮助，请提供帮助

Answer 1

您可以使用CASE这样的句子，而不是WHERE：

WHERE
    (@temp1 = 0 OR Date1 between (@startdate and @enddate)) AND
    (@temp2 = 0 OR Date2 between (@startdate and @enddate))

如果@temp1 = 0，则满足第一个条件的第一部分，并且不评估条件Date1 between (@startdate and @enddate)。但是，如果@temp1 = 1，则会评估between。 @temp2和Date2条件

也是如此

在where子句中选择两列之间的情况，SQL Server

1 个答案: