Possible to un-anonymize VALUES clause?

Let’s say I have the following as a starting point:

select * from (values (1,'a'),(2,'b'))

Is it possible to provide column names to the value columns up-stream, for example something like:

select
    col1 AS id,
    col2 AS letter
from (
    <anonymous values>
)

Or is it basically once you have an anonymous values clause you cannot name it.

>Solution :

You can use a table alias that also specifies column names:

select * 
from ( 
  values (1,'a'),(2,'b')
) as v(id, letter);