HTML下拉列表中不必要的空格

Question

我有一个小的2列表。列是MR_ID和Supp_ID。 MR_ID需要是不同的，以便它不显示重复值，而我想引入所有Supp_ID值。

将MR_ID值导入下拉列表。将MR_ID值带入下拉列表的查询的工作原理是没有显示重复值。但是，需要清理很多空白区域。我怎么能这样做？

SQL查询：

"WITH CTE AS
(
   SELECT MR_ID, Supp_ID,
          RN = ROW_NUMBER() OVER (PARTITION BY MR_ID ORDER BY MR_ID, Supp_ID)
   FROM Stage_Rebate_Index
)
SELECT MR_ID = CASE WHEN RN = 1 THEN Cast(MR_ID as varchar(50)) ELSE '' END,
       Supp_ID
FROM CTE"

下拉列表示例：

Answer 1

试试这个..看起来你只关心RN 1

WITH CTE AS
(
   SELECT MR_ID, Supp_ID,
          RN = ROW_NUMBER() OVER (PARTITION BY MR_ID ORDER BY MR_ID, Supp_ID)
   FROM Stage_Rebate_Index
)
SELECT MR_ID = Cast(MR_ID as varchar(50))
      ,Supp_ID
FROM CTE
Where RN =1