Why select 1 where current_date = 'infinity'; doesn't work?

It gives me the following error:

ERROR:  invalid input syntax for type date: "infinity"

I thought I could use it anywhere in my sql.

I have to add a cast to timestamp in order for this to work. I thought
I wouldn't need to use a case.

Am I missing something?

Thanks in advance.


--
Regards,

Francisco Figueiredo Jr.
Npgsql Lead Developer
http://fxjr.blogspot.com
http://www.npgsql.org