Question

在事务表中，有order_ID（PK），transaction_date，cus_ID，store_ID。现在我需要通过cus_ID，count（store_ID）= 1来获取所有cus_ID。但是有一个例外 - 当cus_ID只有store_ID =＆＃39; 999＆＃39;的订单时。交易日期应为过去365天。我的代码如下：

Select cus_ID, count(store_ID) as store_count
From trn_header
where transanction_date From '7/30/2017' - 365 To '7/30/2017'
group by cus_ID having store_count = 1

我只是不知道如何排除＆＃39;＆＃39;＆＃39;＆＃39;条件... 感谢

Answer 1

Select cus_ID, count(store_ID) as store_count
From trn_header
where transanction_date From '7/30/2017' - 365 To '7/30/2017' And store_ID<>'999'
group by cus_ID having store_count = 1

希望它有所帮助

Answer 2

正确的答案应该是这样的：

select distinct cus_id, store_id from
(select cus_id,count(distinct store_id) as freq
from a
where transaction_date between @begin_date and @end_date
group by cus_id
having count(distinct store_id) = 1
) b, a where a.cus_id = b.cus_id and store_id <> '999'

如何在使用group by和count（）

2 个答案: