Alternative to UDF in aws redshift

I am creating views on a redshift table, but would like to have some sort of argument that I can pass to limit the data I get back from the view. The table is for the whole month and joins take a lot of time. I looked into redshift documentation but it says that redshift doesnot support user-defined functions. Is there any alternative to choose besides views/UDF....

To be particular, I have a query like: “with lookup as(Select DISTINCT * from Table where property_value = 'myproperty' AND time_stamp > ‘2015-07-##’ AND time_stamp < ‘2015-07-##’ order by sortkey) Select * from lookup where ……..”

I wanted to be flexible in changing the time_stamp. Also, would like user to pass arguments to the created view and grab data just for specified timestamps.

Thanks