Question

Working with

• SQL server 2005
• procedures
• parameters

I have a normal query:

select column1, column2
from table1
where column3 in ( select columnb from table2 )

and now I have a filter for example an int

declare @filtertype int /*@filtertype=1 then column3,@filtertype=2 then column2*/ 
set @filtertype int

i nedd somethings as this

select column1, column2
from table1
where
   case when @filtertype=1 then (column3 in (select columnb from table2))
   else (column2 in (select columnb from table2))

if you see it, you could see unique change is column3 for column2

I do not want to duplicate my large query like this:

if(@filtertype=1)
begin
   first query
end
else
   other query
begin
end

Answer 1

Try this:

   select column1, column2 
    from table1 
    where 
    (@filtertype=1 AND (column3 in (select columnb from table2)))
    OR
    (@filtertype=2 AND (column2 in (select columnb from table2)))