Sql 在外部查询中显示子查询的计数

我希望将Query2中的部门数作为Query1中的一个新列来查看。我该怎么做

Query 1:
SELECT
    location_id,
    street_address,
    postal_code,
    city,
    state_province,
    country_id
FROM
    locations;

Query 2:
SELECT
    location_id,
    COUNT(department_id)
FROM
    departments 
group by location_id;

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一种方法是相关子查询：

select l.*,
       (select count(*) from departments d where d.location_id = l.location_id
       ) as num_departments
from locations l;

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一种方法是相关子查询：

select l.*,
       (select count(*) from departments d where d.location_id = l.location_id
       ) as num_departments
from locations l;