Why doesn't LAST_VALUE return the last value?

Question

I want to find the last value of y over an ordered partition using a query like this:

SELECT
  x,
  LAST_VALUE(y) OVER (PARTITION BY x ORDER BY y AS         


        

Answer 1

Other option you have is to change the query order by to desc

SELECT
  x,
  LAST_VALUE(y) OVER (PARTITION BY x ORDER BY y ASC)
FROM table
order by x desc

but the you will get the last value only for the first row