SQL內部聯接查詢

Question

我工作的SQL查詢，請請給我解決

請找有關於申請

數據，如表

表1 'tbl_SuperAdmin'的波紋管任務簡要細節具有例如

s_id name age gtc....... 
1  abc 23 ......... 
2  cda 42 .......... 

另一個表2 'tbl_Renewal'

renewalid renname date supid Payed etc...... 
1   first -  1  1 ........ 
2   first -  2  1 ........ 
3   second -  1  0  ........ 
4   second -  1  1  ........ 
5   third-  1  1  ........ 

查詢select *from tbl_superadmin as a inner join tbl_Renewal as b on a.s_id=b.supid

結果是

s_id name age gtc....... renewalid renname date supid Payed etc....... 
1  abc 23 .............1  first  -  1   1 ........ 
2  cda 42 .............2  first  -  2   1 ........ 
1  abc 23 .............3  second  -  1  0  ........ 
1  abc 23 .............4  second  -  1  1  ........ 
1  abc 23 .............5  third  -  1  1  ........ 

在這裏，我想是如何祈禱，= 1和renewalid遞減，且無需S_ID不重複的1以上的一次

我想顯示我的結果，如

s_id name age gtc....... renewalid renname date supid Payed etc....... 
    1  abc 23 .............5  third  -  1  1  ........ 
    2  cda 42 .............2  first  -  2   1 ........ 

這樣的結果，我想請任何機構幫助它

感謝 普拉迪普

Answer 1

要刪除重複項，您需要使用Windows Function。

With cte as 
(
select *,row_number() over(partition by s_id order by renewalid desc)rn 
from tbl_superadmin as a 
inner join tbl_Renewal as b 
on a.s_id=b.supid 
) 
Select * from cte where rn=1 

演示在SQL FIDDLE

更新

;With cte as 
( 
select *,row_number() over(partition by s_id order by renewalid desc)rn 
from alz_SuperAdmin as a inner join alz_Renewal as b on a.s_id=b.supid 
) 
select top 2 CONVERT(varchar(6),a.lastdate,6) as lastdate, 
(select name from alz_states where ID=a.joblocation) as locat, 
from alz_jobpost as a 
inner join 
(Select col1,col2,col3.... from cte where rn=1)ct 
on ct.commonColumn=a.CommonColumn and 
ct.Product in 
(Select query) 

Answer 2

您應在查詢中使用GROUP BY和ORDER。類似這樣的：

SELECT 
    * 
FROM 
    tbl_SuperAdmin AS a 
INNER JOIN 
    tbl_Renewal AS b 
ON 
    a.s_id = b.supid 
GROUP BY 
    a.s_id 
ORDER BY 
    b.renewalid 
DESC