Applying Multiple Window Functions On Same Partition

Question

Is it possible to apply multiple window functions to the same partition? (Correct me if I'm not using the right vocabulary)

For example you can do

SELECT name, first_value() over (partition by name order by date) from table1

But is there a way to do something like:

SELECT name, (first_value() as f, last_value() as l (partition by name order by date)) from table1

Where we are applying two functions onto the same window?

Reference: http://postgresql.ro/docs/8.4/static/tutorial-window.html

Answer 1

Can you not just use the window per selection

Something like

SELECT  name, 
     first_value() as f OVER (partition by name order by date), 
     last_value() as l OVER (partition by name order by date) 
from table1

Also from your reference you can do it like this

SELECT sum(salary) OVER w, avg(salary) OVER w
FROM empsalary
WINDOW w AS (PARTITION BY depname ORDER BY salary DESC)