题解 | #列出供应商及其可供产品的数量#
列出供应商及其可供产品的数量
https://www.nowcoder.com/practice/17f22851cf204019b51a36761a3afc79
select
t1.vend_id ,
count(t2.prod_id) as prod_id
from Vendors t1
left join Products t2
on t2.vend_id = t1.vend_id
group by t1.vend_id
order by t1.vend_id
/*SQL*/;
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