Question

我有一个名为Details的表。样本记录如下

ID        PNO    ActionsTaken    
52101    2       Received  
52101   5       Received  
52101   3       Received  
52101   3       Send To HO  
52101   3       Send to RD  
52101   7       Received  
52101   8       Received  
35501   2       Received  
35501   7       Received  
35501   7       Send To HO

我需要按如下方式查询记录

ID    PNO    ActionsTaken
52101    2       Received
52101    5       Received
52101    7       Received
52101    8       Received
35501    2       Received

ActionTaken仅“收到”没有获得“发送到HO”或“发送到RD”等其他操作。

Answer 1

表格包含 7条记录，其中 [ActionsTaken] 为“已收到”。但结果集只需 5条记录， [ActionsTaken] 为“已收到”，这意味着结果需要 [ActionsTaken] 为“已收到” “而且 [ID] 和 [PNO] 不应该只有”已接收“以外的 [ActionsTaken] 。

SELECT T1.*
  FROM [Table] T1
 WHERE T1.ActionsTaken = 'Received'
   AND NOT EXISTS (
                    SELECT TOP 1 NULL
                      FROM [Table] T2
                     WHERE T2.ID = T1.ID
                       AND T2.PNO = T1.PNO
                       AND T2.ActionsTaken <> 'Received'
                  )

Answer 2

您的查询是

Select * from Details where ActionsTaken = 'Received'

Answer 3

;WITH CTE AS (
select ID,PNO from @Table1 where ActionsTaken <> 'Received'
)

select T.* 
from @Table1 T
left join CTE c on t.ID=c.ID AND t.PNO = c.PNO
 WHERE c.ID IS NULL

说明： -

在代码段中，我使用CTE获取所有没有值＆＃39;已接收的记录的ID，PNO。所以在这种情况下，CTE中将有2条记录

ID     PNo
52101  3
35501  7

在下一个sql语句中，它将与cte一起加入主表。如果没有WHERE条件（c.ID IS NULL），结果集将为

ID        PNO    ActionsTaken    ID    PNo
52101    2       Received        NULL  NULL
52101    5       Received        NULL  NULL
52101    3       Received        52101 3
52101    3       Send To HO      52101 3
52101    3       Send to RD      52101 3
52101    7       Received        NULL  NULL
52101    8       Received        NULL  NULL
35501    2       Received        NULL  NULL
35501    7       Received        35501 7
35501    7       Send To HO      35501 7

现在，当应用WHERE条件（c.ID IS NULL）时，我们将获得ActionTaken的记录仅为＆＃34;已收到＆＃34;。

Answer 4

cte不适用于我的sql，所以，没有cte：

SELECT DISTINCT [d1]。* FROM @Details AS [d1] LEFT JOIN @Details AS [d2] ON [d1]。[id] = [d2]。[id] AND [d1]。[pno] = [d2]。[pno]和[d2]。[ActionsTaken]＆lt;＆gt; “收到” WHERE [d1]。[ActionsTaken] ='收到'和[d2]。[id] IS NULL;

Answer 5

@juozas Op并不想拍摄不同的唱片，他只是想要收到带有actions_taken的唱片，所以这对于这个问题是完美的：

SELECT ID,PNO,ActionsTaken FROM Details WHERE ActionsTaken = 'Received';

SQL计数使用where子句在表中查找单行

5 个答案: