問題描述

我不確定這個(gè)問題的標(biāo)題是什么，但如果你有更好的主意，請隨時(shí)編輯它.

I wasn't sure what to title this question, but feel free to edit it if you have a better idea.

假設(shè)我有如下所示的數(shù)據(jù):

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

我想做的是找出差異.我想查看 column B 中存在哪些不在 column A 中的內(nèi)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

對此有什么建議嗎?

編輯 #1:

表格不是這樣存儲的，表格每個(gè)單元格沒有多個(gè)值；但是，我從 SQL 查詢發(fā)送報(bào)告，任務(wù)是顯示 列 a 和 b 具有多個(gè)這樣的值的差異.

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.

這是我的 SQL 查詢目前在結(jié)果中的樣子.

This is what my SQL query currently looks like in the results so far.

編輯 #2:

表格中的每個(gè)記錄/列交叉點(diǎn)沒有多個(gè)值.為了讓最終用戶更容易查看報(bào)告，我在交集中放置了多個(gè)值，在我的 SQL 查詢結(jié)果中，以便顯示存在和不存在的內(nèi)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.

我正在嘗試創(chuàng)建 column C 以顯示差異.

I am trying to create column C to show the differences.

編輯 #3:

Column A 來自一個(gè)數(shù)據(jù)源Column B 來自另一個(gè)數(shù)據(jù)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，我只是選取 2 列并嘗試以更簡單的方式找出差異.

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.

推薦答案

不清楚是否要將多個(gè)差異聚合到一個(gè)分隔單元格中.

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

退貨

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

這篇關(guān)于找出兩列之間的差異的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網(wǎng)！