從sql數據庫顯示一個唯一的行

我想顯示一個表中有一個唯一的行，具有相同的值重複行數。我曾嘗試這個sql查詢，從sql數據庫顯示一個唯一的行

select 
    table1.activityhp, table2.id, table1.sequenceno 
from 
    ServiceDataElementsNew as table1, 
    VerticalsumNew as table2 
where 
    table1.verticalsumid = table2.id

，並得到了這樣的結果：

activityhp      id  sequenceno 
    Total new and repeat acceptors 1 5 
    Total new and repeat acceptors 1 5 
    Total new and repeat acceptors 1 5 
    Total new and repeat acceptors 1 5 
    Total new and repeat acceptors 1 5 
    Total new and repeat acceptors 1 5 
    New acceptors     2  6 
    New acceptors     2 6 
    New acceptors     2 6 
    Repeat acceptors   3 10 
    Repeat acceptors   3 10 
    Repeat acceptors   3 10

但我想這一點：

activityhp      id  sequenceno 
    Total new and repeat acceptors 1 5 
    New acceptors     2  6 
    Repeat acceptors   3 10

感謝您的幫助！

來源

2014-02-12 afom

[不良習慣踢：使用舊樣式的JOIN（http://sqlblog.com/blogs/aaron_bertrand/archive/2009/10/08/bad-habits-to-kick- using-old-style-joins.aspx） - 舊式*逗號分隔的表*樣式列表已停用ANSI-** 92 ** SQL標準（超過** 20年前**） –

**add to query** 

     group by table1.activityhp , table2.id ,table1.sequenceno

來源

2014-02-12 06:22:03

請嘗試使用DISTINCT關鍵字，從而消除重複條目。

select DISTINCT 
    table1.activityhp, 
    table2.id, 
    table1.sequenceno 
from 
    EthioHIMS_ServiceDataElementsNew as table1, 
     EthioHIMS_VerticalsumNew as table2 
where table1.verticalsumid=table2.id

參見：Eliminating Duplicates with DISTINCT (MSDN)

來源

2014-02-12 06:08:46 TechDo

您可以使用不同爲如下所述：

select distinct 
    table1.activityhp, 
    table2.id, 
    table1.sequenceno 
from 
    EthioHIMS_ServiceDataElementsNew as table1 , 
    EthioHIMS_VerticalsumNew as table2 
where 
    table1.verticalsumid=table2.id

來源

2014-02-12 06:09:37 SpiderCode

只需使用DISTINCT功能，您將獲得所需的輸出。

來源

2014-02-12 06:10:05

select Distinct 
    table1.activityhp, 
    table2.id, 
    table1.sequenceno 
from 
    EthioHIMS_ServiceDataElementsNew as table1 , 
    EthioHIMS_VerticalsumNew as table2 
where 
    table1.verticalsumid=table2.id

或者

select 
     table1.activityhp, 
     table2.id, 
     table1.sequenceno,count(*) 
    from 
     EthioHIMS_ServiceDataElementsNew as table1 , 
     EthioHIMS_VerticalsumNew as table2 
    where 
     table1.verticalsumid=table2.id 
     group by table1.activityhp, 
       table2.id, 
       table1.sequenceno 
     having count(*)=1

來源

2014-02-12 06:10:34

I已經嘗試過，但我得到不同的結果。 – afom

您正在使用什麼RDBMS？ sql server？mysql？oracle？ –

嘗試編輯一個！ –

使用不同和內部連接。

select 
    distinct 
    table1.activityhp, 
    table2.id, 
    table1.sequenceno 
from 
    EthioHIMS_ServiceDataElementsNew as table1 
inner join EthioHIMS_VerticalsumNew as table2 
    on table1.verticalsumid=table2.id

來源

2014-02-12 06:14:56

從sql數據庫顯示一個唯一的行

回答

相關問題