Question

我试图从我的表中获取不同的值。这是我的SQL查询

SELECT DISTINCT E.RM_Name, E.RM_Mobile,E.ZSM_NAme,E.ZSM_Mobile,E.SM_Name,
E.SM_Mobile,E.Zone              
from tbl_employee E where day(RM_DOB)=25 and month(RM_DOB)=6

这是我得到的输出：

RM_Name       | RM_Mobile   | ZSM_NAme      |ZSM_Mobile | SM_Name       | SM_Mobile     |Zone
--------------|-------------| --------------|-----------| --------------| --------------|----------------
JOHNSON KYOSA | 1234567895  | Daniel GUPTA  |1296541235 | KAPIL SHARMA  | 2589631472    |BULUNDSHAHAR
JOHNSON KYOSA | 1234567895  | Daniel GUPTA  |1296541235 | KAPIL SHARMA  | 2589631472    |GHAZIABAD 1
JOHNSON KYOSA | 1234567895  | Daniel GUPTA  |1296541235 | KAPIL SHARMA  | 2589631472    |MEERUT
JOHNSON KYOSA | 1234567895  | Daniel GUPTA  |1296541235 | KAPIL SHARMA  | 2589631472    |MORADABAD
JOHNSON KYOSA | 1234567895  | Daniel GUPTA  |1296541235 | KAPIL SHARMA  | 2589631472    |MUZAFFARNAGAR
JOHNSON KYOSA | 1234567895  | Daniel GUPTA  |1296541235 | KAPIL SHARMA  | 2589631472    |NOIDA
JOHNSON KYOSA | 1234567895  | Daniel GUPTA  |1296541235 | KAPIL SHARMA  | 2589631472    |SAHARANPUR

查询为除Zone以外的其他列提供重复值，因为它在此处不同。有没有办法得到像这样的输出：

RM_Name       | RM_Mobile   | ZSM_NAme      |ZSM_Mobile | SM_Name       | SM_Mobile     |Zone
--------------|-------------| --------------|-----------| --------------| --------------|----------------
JOHNSON KYOSA | 1234567895  | Daniel GUPTA  |1296541235 | KAPIL SHARMA  | 2589631472    |BULUNDSHAHAR

即。如果除了Zone之外的所有其他行值相同，则显示一行（顶行）。我尝试了以下查询，但它不起作用。

select * from tbl_employee where RM_Name in (
    select RM_Name from tbl_employee WHERE day(RM_DOB)=25 and month(RM_DOB)=6
    group by RM_Name having count(*) > 1
)

请建议我。谢谢！

Answer 1

SELECT
  E.RM_Name,E.RM_Mobile,E.ZSM_NAme,E.ZSM_Mobile,E.SM_Name,E.SM_Mobile,MIN(E.Zone)
FROM
  tbl_employee  E
WHERE
  day(E.RM_DOB)=25 and month(E.RM_DOB)=6
GROUP BY
  E.RM_Name,E.RM_Mobile,E.ZSM_NAme,E.ZSM_Mobile,E.SM_Name,E.SM_Mobile

Answer 2

如果您一次只能返回1行，那么只需使用TOP：

SELECT TOP 1 DISTINCT  
       E.RM_Name,
       E.RM_Mobile,
       E.ZSM_NAme,
       E.ZSM_Mobile,
       E.SM_Name,
       E.SM_Mobile,
       E.Zone              
FROM tbl_employee E
WHERE day(RM_DOB)=25
  AND month(RM_DOB)=6;

如果您要为多名员工做这件事，也许......

WITH RNs AS(
    SELECT E.RM_Name,
           E.RM_Mobile,
           E.ZSM_NAme,
           E.ZSM_Mobile,
           E.SM_Name,
           E.SM_Mobile,
           E.Zone,
           ROW_NUMBER() OVER (PARTITION BY E.RM_Name, E.RM_Mobile,E.ZSM_NAme,E.ZSM_Mobile,E.SM_Name, E.SM_Mobile
                              ORDER BY E.Zone ASC) AS RN
    FROM tbl_employee E
    WHERE day(RM_DOB)=25
      AND month(RM_DOB)=6)
SELECT *
FROM RNs
WHERE RN = 1;

Answer 3

您可以使用row_number()功能

select * 
from (select *,
           row_number() over (partition by RM_Name, RM_Mobile, ZSM_NAme, ZSM_Mobile, SM_Name, SM_Mobile order by Zone) Seq 
     from bl_employee t
     where day(RM_DOB)=25 and month(RM_DOB)=6
     ) t
where Seq = 1;

Answer 4

SELECT DISTINCT E.RM_Name, E.RM_Mobile,E.ZSM_NAme,E.ZSM_Mobile,E.SM_Name,
E.SM_Mobile,E.Zone              
from tbl_employee E where day(RM_DOB)=25 and month(RM_DOB)=6 
group by E.RM_Name, E.RM_Mobile,E.ZSM_NAme,E.ZSM_Mobile,E.SM_Name,
E.SM_Mobile,E.Zone

如何根据特定条件在SQL中选择不同的行？

4 个答案: