问题描述
我不确定这个问题的标题是什么,但如果你有更好的主意,请随时编辑它.
I wasn't sure what to title this question, but feel free to edit it if you have a better idea.
假设我有如下所示的数据:
Let's say I have data that looks like this:
Column A Column B John, Sally, Cindy John, Sally, Cindy, Steve John, Cindy John, Sally, Cindy Sally, Cindy Sally, Cindy Sally, Steve John, Sally, Steve
我想做的是找出差异.我想查看 column B 中存在哪些不在 column A 中的内容,以便我有一列如下所示:
What I would like to do is find the differences. I want to see what exists in column B that are not in column A, so that I have a column that looks like this:
Column C Steve Sally '' John
对此有什么建议吗?
编辑 #1:
表格不是这样存储的,表格每个单元格没有多个值;但是,我从 SQL 查询发送报告,任务是显示 列 a 和 b 具有多个这样的值的差异.
The table is not stored like this, the table does not have multiple values per cell; however, I am sending a report from a SQL query and the assignment is to show the differences with columns a and b having multiple values like this.
这是我的 SQL 查询目前在结果中的样子.
This is what my SQL query currently looks like in the results so far.
编辑 #2:
表格中的每个记录/列交叉点没有多个值.为了让最终用户更容易查看报告,我在交集中放置了多个值,在我的 SQL 查询结果中,以便显示存在和不存在的内容.
There are not multiple values per record/column intersection in the table. To make the report easier to view for the end user, I placed multiple values in the intersection, in my SQL Query Results, so show what is there and what is not there.
我正在尝试创建 column C 以显示差异.
I am trying to create column C to show the differences.
编辑 #3:
Column A 来自一个数据源Column B 来自另一个数据源.
Column A comes from one data source Column B comes from another data source.
A 和 B 不是彼此的子集,我只是选取 2 列并尝试以更简单的方式找出差异.
A and B are not subsets of each other, I am simply taking 2 columns and trying to find the differences in an easier way.
推荐答案
不清楚是否要将多个差异聚合到一个分隔单元格中.
Not clear if you want multiple differences aggregated into one delimited cell.
示例
Declare @YourTable table (ColA varchar(150),ColB varchar(150)) Insert Into @YourTable values ('John, Sally, Cindy','John, Sally, Cindy, Steve'), ('John, Cindy','John, Sally, Cindy'), ('Sally, Cindy','Sally, Cindy'), ('Sally, Steve','John, Sally, Steve') Select A.* ,B.* From @YourTable A Outer Apply ( Select Diff=value From ( Select value=ltrim(rtrim(value)) From string_split(ColA,',') Union All Select value=ltrim(rtrim(value)) From string_split(ColB,',') ) B1 Group By Value Having count(*)=1 ) B
退货
ColA ColB Diff John, Sally, Cindy John, Sally, Cindy, Steve Steve John, Cindy John, Sally, Cindy Sally Sally, Cindy Sally, Cindy Sally, Steve John, Sally, Steve John