SQL Server - 匹配两列的多个字符串并使用共享字符串列出记录答案

【问题标题】：SQL Server - matching multiple strings of two columns and list records with shared stringsSQL Server - 匹配两列的多个字符串并使用共享字符串列出记录
【发布时间】：2018-04-26 23:16:25
【问题描述】：

例如我有这个数据：

ID  word1       word2
1   white dog   black dog
2   big tall    tall building
3   wood        green wood
4   big house   green wood
5   long way    street

我想用相似的字符串列出两列：

ID  word1       word2
1   white dog   black dog
2   big tall    tall building
3   wood        green wood

我试过了，但没有成功：

SELECT word1, word2 from  Table where word1 like '%'+word2+'%'

【问题讨论】：

标签： sql-server sql-server-2008 sql-server-2012

【解决方案1】：

几乎任何拆分/解析函数都可以。这是一个内联方法

示例

Select Distinct A.* 
 From  YourTable A
 Cross Apply (
                Select RetVal = LTrim(RTrim(B.i.value('(./text())[1]', 'varchar(max)')))
                From  (Select x = Cast('<x>' + replace((Select replace(Word1,' ','§§Split§§') as [*] For XML Path('')),'§§Split§§','</x><x>')+'</x>' as xml).query('.')) as A 
                Cross Apply x.nodes('x') AS B(i)
             ) B
 Where charindex(' '+RetVal+' ',' '+Word2+' ')>0

退货

ID  word1       word2
1   white dog   black dog
2   big tall    tall building
3   wood        green wood

【讨论】：

【解决方案2】：

使用基于 XML 的拆分器的解决方案如下所示： See live demo

  SELECT 
        id,word1,word2
    FROM
     (
     SELECT 
      *,
      xmlwords1=cast('<X>'+replace(word1,' ','</X><X>')+'</X>' as XML),
      xmlwords2=cast('<X>'+replace(word2,' ','</X><X>')+'</X>' as XML)
     FROM 
         Sample
     )S1
     CROSS APPLY
     ( 
         SELECT 
             splitwordsfromWord1 = data1.D.value('.','varchar(100)'),
         splitwordsfromWord2 =data1.D.value('.','varchar(100)')
         FROM 
      S1.xmlwords1.nodes('X') AS data1(D)
         JOIN
      S1.xmlwords2.nodes('X') AS data2(D)
         ON
            data1.D.value('.','varchar(100)')= data2.D.value('.','varchar(100)')
      ) O

【讨论】：