Question

CASE 
          WHEN [col1] = 's' THEN 8
          WHEN [col1] = 't' THEN 6 
          WHEN [col1] = 'u' THEN 9
          WHEN [col2] = 'v' THEN 1
.......
END AS product,
DENSE_RANK() OVER (ORDER BY product ASC) AS [Rank]
FROM dbo.TableA

DENSE_RANK()无法使用计算列Product，显示

列名'product'无效。

如何在产品上应用DENSE_RANK()？

Answer 1

你可以这样做：

SELECT 
  *, 
  DENSE_RANK() over (order by product)
FROM (
SELECT 
  CASE 
          WHEN [col1] = 's' THEN 8
          WHEN [col1] = 't' THEN 6 
          WHEN [col1] = 'u' THEN 9
          WHEN [col2] = 'v' THEN 1
 ...
END AS product
FROM dbo.TableA
) t

计算列上的DENSE_RANK

1 个答案: