sql - SQL 语句不起作用

Question

如何做一个像这样一个实际有效的 sql 语句：

select distinct store_id as myid, 
       (select count(*) from products where store_id = myid and delete_flag = true)     
from products 
where delete_flag = true 

我想要一个包含每个商店 ID 的列以及具有该商店 ID 的已删除产品的数量。

Answer 1

select store_id, 
       count(*) as all_product_count,
       sum(case when delete_flag = 1 then 1 else 0 end) as deleted_product_count
from products     
group by store_id

Answer 2

希望能帮助到你！

select store_id as myid , count(*) as noofdeleteditems from products where delete_flag = true group by store_id;