如何在sql中编写以下程序

Question

我有一个列有列的表格..

column1     column2      column3    column4  column5

我希望数据在第二列中填写如下。

其中colum1,3,4,5 ...用户将给出值...

在第2列中，其值应为自动排序，如下所示......

column1     column2      column3    column4  column5
  1            1           one       one       one
  1            2          two       two       two
  1            3          three     three     three
  2            1          one       one       one
  2            2           two       two       two 
  2            3           three     three     three
  3            1           one       one       one
  3            2           two       two       two
  3            3           three     three     three

好心的人给你的建议......谢谢你！ CYA！

Answer 1

似乎你想为每一行赋予column1中相等值的不同值。这可以通过窗口函数来完成：

SELECT column1, 
       row_number() over (partition by column1) as column
FROM some_table

我不明白你想要在第3,4和5列中拥有什么

Answer 2

根据您的平台，以下可能会有效...

UPDATE
  <your-table>
SET
  column2 = ROW_NUMBER() OVER (PARTITION BY column1)

修改

正如马丁在评论中所说的那样......

WITH
  windowed_table
AS
(
  SELECT
    column2,
    ROW_NUMBER() OVER (PARTITION BY column1 ORDER BY column1) AS row_number
  FROM
    my_table
)
UPDATE
  windowed_table
SET
  column2 = row_number