分區通過在兩列ROW_NUMBER函數

我試圖排名使用以下查詢的記錄：分區通過在兩列ROW_NUMBER函數

SELECT 
ROW_NUMBER() over (partition by 
TW.EMPL_ID,TW.HR_DEPT_ID,TW.Transfer_Startdate 
order by TW.EMPL_ID,TW.Effective_Bdate) RN, 
TW.EMPL_ID,TW.HR_DEPT_ID,TW.Transfer_Startdate,Effective_BDate from 
TT_EMPLOYEE_WORKDAY TW 
where TW.HR_DOMAIN_CODE = 'SGP'

然而得到的ROW_NUMBER計算列只顯示分區的第一列。理想情況下，我希望Row_Number具有相同的值，其中按列分區的數據是相同的。

任何線索我可能會出錯？

USING RANK或DENSE RANK是不是一種選擇，因爲我想以識別多個僱員的所有這樣的行，其中EMPL_ID，HR_DEPT_ID和Transfer_StartDate是相同（RN = 1）

Sample data: 
RN AON_EMPL_ID HR_DEPT_ID Transfer_Startdate Effective_BDate 
1 0100690  69895    01/01/2017  2017-01-01 
2 0100690  69895    01/01/2017  2017-01-03 
3 0100690  69895    01/01/2017  2017-01-04

來源

2017-04-19 Sharktooth

我認爲樣本數據和期望的結果會幫助你解釋你想要的。 –

作爲ddl + dml的樣本數據和期望的結果將有助於... –

，因爲您按順序排列結果，它將擾亂「分區」部分，嘗試「按TW.EMPL_ID排序，TW.HR_DEPT_ID，TW.Transfer_Startdate ，TW.RN'或刪除'Order by' – LONG

SELECT 
RANK() over (partition by --or DENSE_RANK() 
TW.EMPL_ID,TW.HR_DEPT_ID,TW.Transfer_Startdate 
order by TW.EMPL_ID,TW.Effective_Bdate) RN, 
TW.EMPL_ID,TW.HR_DEPT_ID,TW.Transfer_Startdate,Effective_BDate from 
TT_EMPLOYEE_WORKDAY TW 
where TW.HR_DOMAIN_CODE = 'SGP'

UPDATE

SELECT 
RANK() over (partition by --or DENSE_RANK() 
TW.EMPL_ID,TW.HR_DEPT_ID,TW.Transfer_Startdate 
order by TW.EMPL_ID) RN, 
TW.EMPL_ID,TW.HR_DEPT_ID,TW.Transfer_Startdate,Effective_BDate from 
TT_EMPLOYEE_WORKDAY TW 
where TW.HR_DOMAIN_CODE = 'SGP' 
Order by RN,TW.Effective_Bdate

來源

2017-04-19 12:10:13 LONG

擴大樣本數據：

create table t (
    aon_empl_id varchar(16) 
    , hr_dept_id varchar(16) 
    , Transfer_Startdate date 
    , Effective_bdate date 
); 
insert into t values 
('0100690','69895','01/01/2017','2017-01-01') 
,('0100690','69895','01/01/2017','2017-01-03') 
,('0100690','69895','01/01/2017','2017-01-04') 
,('0200700','69895','01/01/2016','2016-01-01') 
,('0200700','69895','01/01/2016','2016-01-03') 
,('0200700','69896','01/01/2017','2017-01-04') 
,('0200700','69896','01/01/2017','2017-01-04');

使用top with ties

select top 1 with ties 
    aon_empl_id 
    , hr_dept_id 
    , Transfer_Startdate = convert(char(10),Transfer_Startdate,120) 
    , Effective_bdate = convert(char(10),Effective_bdate,120) 
from t 
order by row_number() over (
     partition by aon_empl_id, hr_dept_id, Transfer_Startdate 
     order by Effective_bdate 
    )

rextester演示：http://rextester.com/KOIZ42069

回報：

+-------------+------------+--------------------+-----------------+ 
| aon_empl_id | hr_dept_id | Transfer_Startdate | Effective_bdate | 
+-------------+------------+--------------------+-----------------+ 
|  0100690 |  69895 | 2017-01-01   | 2017-01-01  | 
|  0200700 |  69895 | 2016-01-01   | 2016-01-01  | 
|  0200700 |  69896 | 2017-01-01   | 2017-01-04  | 
+-------------+------------+--------------------+-----------------+

使用 common table expression與 row_number()

備選：

個

;with cte as (
select 
    rn = row_number() over (
     partition by aon_empl_id, hr_dept_id, Transfer_Startdate 
     order by Effective_bdate 
    ) 
    , aon_empl_id 
    , hr_dept_id 
    , Transfer_Startdate = convert(char(10),Transfer_Startdate,120) 
    , Effective_bdate = convert(char(10),Effective_bdate,120) 
from t tw 
) 

select * 
from cte 
where rn = 1

回報：

+----+-------------+------------+--------------------+-----------------+ 
| rn | aon_empl_id | hr_dept_id | Transfer_Startdate | Effective_bdate | 
+----+-------------+------------+--------------------+-----------------+ 
| 1 |  0100690 |  69895 | 2017-01-01   | 2017-01-01  | 
| 1 |  0200700 |  69895 | 2016-01-01   | 2016-01-01  | 
| 1 |  0200700 |  69896 | 2017-01-01   | 2017-01-04  | 
+----+-------------+------------+--------------------+-----------------+

來源

2017-04-19 12:11:42 SqlZim

這非常適用於我作爲一個樣本一個員工記錄，在員工人數將重複秩例如用於上述組行的都將是1，但在未來的員工將是2。我想有RN = 1對所有員工的記錄，其中empl_id，hr_dept_id， transfer_startdate是一樣的。 – Sharktooth

@Sharktooth時，你希望它不會是'1'沒有解釋。「分區」中的哪個部分，例如'（分區由aon_empl_id爲了通過aon_empl_id，hr_dept_id，Transfer_Startdate）' – SqlZim

分區通過將具有以下列：aon_empl_id，hr_dept_id，Transfer_Startdate如果這些列具有用於多行鮮明的唯一值，則RN應該遞增1，否則它應該保持1 – Sharktooth

這段代碼似乎工作：

SELECT 
dense_rank() over (partition by AON_EMPL_ID 
order by AON_EMPL_ID,HR_DEPT_ID,Transfer_StartDate) RN, 
TW.AON_EMPL_ID,TW.HR_DEPT_ID,TW.Transfer_Startdate,Effective_BDate from 
TT_AON_EMPLOYEE_WORKDAY TW 
where TW.HR_DOMAIN_CODE = 'SGP'

很顯然，我只需要通過AON_EMPL_ID和其他所有分區應該去ORDER BY子句。

來源

2017-04-19 13:09:34 Sharktooth

分區通過在兩列ROW_NUMBER函數

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