Is there an equivalent of Oracle's count in PostgreSQL window functions?

Question

PostgreSQL

I know that there are window functions in PostgreSQL, but I did not find the banal count in the list of functions
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SQL?

Answer 1

postgresql does not explicitly distinguish between aggregate and window functions. As a window function, you can use any aggregating function (except those specified in the list (or implemented as) Ordered-Set and Hypothetical-Set).
https://www.postgresql.org/docs/current/static/fun...

Answer 2

and try? the same will be, except range