独特和ROW_NUMBER不共同努力

Question

我想唯一的名称列表，以及一个行数列，以便它看起来像这样：

1 wilford building 
2 oxford center 
3 williams place 

我需要的不同之处在那里，让我只获得一次建筑名称。

SELECT R.RowNum, 
     R.COLUMN_NAME 
FROM 
(
    SELECT ROW_NUMBER() OVER (PARTITION BY buildingName 
           ORDER BY buildingName) AS RowNum, 
      DISTINCT buildingName AS COLUMN_NAME 
    FROM cityStatus 
) AS R 

但是，事实并非如此。

是否可以使用DISTINCT和ROW_NUMBER()？

Answer 1

SELECT 
    buildingName, 
    ROW_NUMBER() OVER(ORDER BY buildingName) AS RowNum 
FROM cityStatus 
GROUP BY buildingName 

Answer 2

执行不同的第一：

SELECT 
    row_number() over(partition by buildingName ORDER BY buildingName) AS RowNum 
    ,COLUMN_NAME 
from (
    select 
     DISTINCT buildingName AS COLUMN_NAME 
    FROM cityStatus 
) as cityStatus