can we create a view with parameters

Example
Table1
code col1 col2 col3
A 1 10 2
B 1 21 3
C 0 4 7
D 0 3 9

View1 :

select case col1 = 1 then paradate + col2 days
else paradate - col3 days as res1 from table1

paradate is parameter i want to pass when quering view

Is this possible using views or i have to write function

Thanks

Table Function ?

From CREATE VIEW in the manuals :

fullselect
Defines the view. At any time, the view consists of the rows that would result if the SELECT statement were executed. The fullselect must not reference host variables, parameter markers, or declared temporary tables. However, a parameterized view can be created as an SQL table function.

Thanks Sathyaram