Order a postgreSQL query on a rolling period

Question

it will be easier if i illustrate my question with a concrete example.

my query (postgresql) :

SELECT 
    type.name_type as type_name,
    extract(day from event.creation_date) as days,
    count(0) as number
FROM event, type, event_type
WHERE event.id = event_type.event_id
    AND type.type_id = event_type.type_id
GROUP BY days, type_name;

i would like to order the result according to a rolling month. let me explain :

-> let's say we are currently the 6th of whatever month

-> i want the table returned to be ordered on a month according to this day, which means from the 7th to the 6th (current day)

anyone has an idea of how I could do that ?

any help is appreciated :) have a nice day!

(PS : if these explications aren't enough, i'll try my best to be more specific)

Answer 1

If I understand correctly , you want to order by date :

SELECT 
    type.name_type as type_name,
    extract(day from event.creation_date) as days,
    count(0) as number
FROM event, type, event_type
WHERE event.id = event_type.event_id
    AND type.type_id = event_type.type_id
GROUP BY days, type_name
order by min(event.creation_date) desc