我如何從一個表由reatining其次數刪除重複值一次

Question

沒有與下面的數據

NAME SALARY 
A  100 
A  100 
B  200 
C  300 
C  300 
D  400 

請爲我提供quert通過一次保留次數即表中刪除重複的EMPLOYEE表有看起來像下面執行刪除操作後

NAME SALARY 
A  100 
B  200 
C  300 
D  400 

Answer 1

它是非常簡單的通過下面的查詢來刪除重複行..

WITH tblTemp as 
(
SELECT ROW_NUMBER() Over(PARTITION BY Name,Salary ORDER BY Name) 
    As RowNumber,* FROM youtablename 
) 
DELETE FROM tblTemp where RowNumber >1 

多一個把戲檢查網站：--- http://www.codeproject.com/Tips/159881/How-to-remove-duplicate-rows-in-SQL-Server-wh