根据无效产品获取客户名称

Question

我正在使用Oracle Server：

我有下表。我试图让“客户”的“产品”状态为“无效”。但是，如果同一客户的任何产品状态为有效。我不会列出那些。

+----------------+---------+----------+
|     Client     | Product |  Status  |
+----------------+---------+----------+
| John & Co.     |   12548 | Active   |
| John & Co.     |   58451 | Inactive |
| Vector Inc.    |   12243 | Inactive |
| Vector Inc.    |   84425 | Inactive |
| Ambro Info.    |   11145 | Inactive |
| Infy Tech inc. |   12473 | Active   |
| Infy Tech inc. |   84847 | Active   |
+----------------+---------+----------+

预期结果：

+-------------+
|   Client    |
+-------------+
| Vector Inc. |
| Ambro Info. |
+-------------+

我们可以使用Oracle Query来实现这一目标吗。

Answer 1

不存在

select t1.Client from table_name t1 where 
not exists ( select 1 from table_name t2 where t2.Client=t1.Client and t2.status='Active')

with cte as
(
select 'john' as client,12548 as product, 'Active' as status
union all
select 'john' as client,58451 as product, 'Inactive' as status
union all
select 'Vector Inc', 12243 , 'Inactive'
)select t1.client from cte t1 where 
not exists ( select 1 from cte t2 where t2.client=t1.client and t2.status='Active'
)

demo

client
Vector Inc
Ambro Info

Answer 2

，您可以按照以下查询进行操作。

create table #temp (cst varchar(50),prodid int,tag varchar(40))

insert intO #TEMP
VALUES('John & Co.',12548,'Active'),
('John & Co.',58451,'Inactive'),
('Vector Inc',12243,'Inactive'),
('Vector Inc',84425,'Inactive'),
('Ambro Info.',11145,'Inactive'),
('Infy Tech inc',12473,'Active'),
('Infy Tech inc',84847,'Active')

SELECT DISTINCT T.CST FROM #temp T
WHERE T.CST NOT IN(SELECT Z.CST FROM #temp Z WHERE TAG='ACTIVE')

Answer 3

以相反的方式思考，您需要实现所有不在活动列表中的客户端，因此我们可以进行一个简单的查询：（我在这里使用#temp表来表示您的表）

SELECT DISTINCT client
FROM #temp
WHERE status = 'Inactive' -- just incase there are more status rather than 'Active and 'Inactive'
AND client NOT IN
    (SELECT DISTINCT client FROM #temp WHERE status = 'Active')

Answer 4

请尝试以下脚本，

create table #temp (client varchar(50),product int,status varchar(40))

insert intO #TEMP
VALUES('John & Co.',12548,'Active'),
('John & Co.',58451,'Inactive'),
('Vector Inc',12243,'Inactive'),
('Vector Inc',84425,'Active'),
('Ambro Info.',11145,'Inactive'),
('Infy Tech inc',12473,'Inactive'),
('Infy Tech inc',84847,'Inactive'),
('Infy Tech inc',84847,'Active')

SELECT DISTINCT T.client FROM #temp T
WHERE T.client NOT IN(SELECT Z.client FROM #temp Z WHERE z.status='ACTIVE' and T.client=z.client)
and t.status='Inactive'
drop table #TEMP

Answer 5

您希望每个客户一个结果行，因此您是GROUP BY个客户。然后只需检查是否只有状态'Inactive'。如果可能的唯一状态是'Active'和'Inactive'，则可以要求最小值：

select client
from mytable
group by client
having min(status) = 'Inactive'
order by client;

对于更多状态，您必须扩展条件，例如and max(status) = 'Inactive'或and min(status) = max(status)或and count(distinct status) = 1或改为使用条件聚合：

having count(case when status = 'Inactive' then 1 end) > 0
   and count(case when status = 'Active' then 1 end) = 0

Answer 6

我只是简单地进行聚合：

SELECT t.client
FROM table t
GROUP BY t.client
HAVING MIN(Status) = MAX(Status) AND MIN(Status) = 'Inactive';