Postgresql + Grafana and group by question

I am using Grafana 9.5. I am using Postgresql with Timescaledb. I have a table/view which looks like this

time, timestamp without time zone
fn, text
took, double precision
size, double precision

How can I show the took with group by of hosts? When I do

select time,host,took from table group by time,host,took

i only see from 1 host. I have 20 hosts which I would like tho see each one.