Gather the number of customer by street - sql

Question

I have two tables :
Customer:
id
name
address_id
1
John
4
2
Kate
5
3
Bob
2
4
Michael
2
5
Adriana
3
6
Ann
1
Address:
id
detail_str_name
city
district
street_name
1
France,Paris,str.2,N5
Paris
Paris
str.2
2
France,Parise,str.2 ,N3
Paris
Paris
str.2
3
France, Lille ,str.3,N4
Lille
Lille
str.3
4
France,Paris,str.4,N3
Paris
Paris
str.4
5
France, Paris, Batignolles,N4
Paris
Batignolles
Batignolles
I want table like this:
name
detail_str_name
city
district
street_name
sum(cu.num_cust)
John
France,Paris,str.4,N3
Paris
Paris
str.4
1
Kate
France, Paris, Batignolles,N4
Paris
Batignolles
Batignolles
1
Bob
France,Parise,str.2 ,N3
Paris
Paris
str.2
3
Michael
France,Parise,str.2 ,N3
Paris
Paris
str.2
3
Adriana
France, Lille ,str.3,N4
Lille
Lille
str.3
1
Ann
France,Paris,str.2,N5
Paris
Paris
str.2
3
I want to count customer group by city,district and street_name, not detail_str_name.
I try:
select cu..name,ad.detail_str_name, ad.city,ad.district, ad.street_name,sum(cu.num_cust)
from
(select address_id, name,count (id) as num_cust
from customer
group by address_id,name) cu
left join address ad on cu.address_id = ad.id
group by cu..name,ad.detail_str_name, ad.city,ad.district, ad.street_name
But,this code groups by detail_str_name,
Which does not suit me.
What can I change?

Answer 1

I haven't been able to check this so it might not be totally correct but I think the query below should get the data you require.
This SQLTutorial article on the partition by clause might be useful.
SELECT cu.name,
ad.detail_str_name,
ad.city,
ad.district,
ad.street_name,
COUNT(cu.name) OVER(PARTITION BY ad.city, ad.district, ad.street_name) AS 'num_cust'
FROM customer cu
JOIN address ad ON ad.id = cu.address_id