Question

我正在使用SQL Server 2008 ...

我有这个结果集：

ID        Name
------------------
717892    John
717892    Bill
717892    Steve
717200    Mark
717340    Gerald
717340    Frank

这就是我想要的：

ID        Name
------------------
717892    John
717200    Mark
717340    Frank

我不关心返回哪些特定行，我只需要根据ID列查看唯一的行。

我试过了：

SELECT DISTINCT ID, * FROM #tempTable;

但是我收到以下错误：

The text data type cannot be selected as DISTINCT because it is not comparable.

我如何做到这一点？

Answer 1

;WITH cte AS
(
SELECT ID,Name,
       row_number() over (partition by id order by name) as row
From tableName
)

Select ID,Name
FROM cte
Where row=1

基于一列返回唯一行

1 个答案: