Is it possible to use Case in Where clause as follows?

[Napsterr]

Following is the Code I am trying

Declare @Day Int
Set @Day=1
Select 
	Mobile,
	Contact As Name,
	InTimeDay1
From uvw_UserDetails
Where 
	Case 
		When @Day=1 Then Day1=1
		When @Day=2 Then Day2=1
		When @Day=3 Then Day3=1
		When @Day=4 Then Day4=1
		When @Day=5 Then Day5=1
	End

In all total I want to use different Columns in where clause depending upon the value I pass to the variable.
Can it be done with Case Statement?

[ck9663]

Yes you can...It's called conditional where clause...

WHERE 
@variable =
case 
when @variable = 1 then column1
when @variable = 2 then column2
else -1
end

This is just simulation. If you can post some sample data and your required results, we might be able to give more efficient help.

Good Luck!!!


~~ CK

[Napsterr]

I have table Say tblEventDays
Which contains Columns
VisitorId BigInt
Day1 Bit
Day2 Bit
Day3 Bit
Day4 Bit
Day5 Bit
IntimeDay1 Nvarchar
IntimeDay2 Nvarchar
IntimeDay3 Nvarchar
IntimeDay4 Nvarchar
IntimeDay5 Nvarchar

Whenever any Visitor enters in the event his entry for that day goes into this Table.
e.g.
"123456" comes to the event for first day then Day1=True/1
IntimeDay1="11: 30 AM"

I want to generate a report.When User Selects Day from drpDayDownList. I want to show him those Visitors who came on Specific Day.
My event has only 5 days.
So I was trying to write the query I specified at first.
So, to conclude this I want to Compare different columns in Where Clause depending upon variable value to the procedure.
e.g.
When I will pass @Day as 1 Then Query should compare for column Day1=1 and so on.
Can you help?
Thank You.