Question

是否可以使用ROWNUMBER（）过滤掉具有多个rownumber的记录。

E.g。

包含只有一行的记录？

或

排除多个记录？

到目前为止

代码：

SELECT * 
FROM 
    (SELECT 
         ID, blah, blah2, 
         ROWNUMBER() OVER(PARTITION BY ID ORDER BY blah, blah2) AS rn 
     ORDER BY ID) 
WHERE rn IS ONLY 1;

Answer 1

实际上你做得几乎是正确的：

SELECT * 
FROM 
    (SELECT 
         ID, blah, blah2, 
         ROW_NUMBER() OVER(PARTITION BY ID ORDER BY blah, blah2) AS rn
     FROM table_name
     WHERE ... 
    ) 
WHERE rn = 1;

使用多个rownumbers SQL过滤掉记录

1 个答案: