Question

我有一个具有以下结构的表：

PERSON   Sequence    TEXT
  1        1         John ran
  1        2         across the field
  2        1         Bill also
  2        2         ran across the field after John

我想编写一个产生以下结果的查询：

 PERSON   TEXT
 1        John ran across the field
 2        Bill also ran across the field after John

使用T-SQL

可能是这样的

Answer 1

快速草图：

SELECT DISTINCT ST2.person, 
    SUBSTRING(
        (
           SELECT ' '+ST1.[text]  AS [text()]
           FROM [dbo].[tab] ST1
           WHERE ST1.person = ST2.person
           ORDER BY ST1.person, ST1.sequence
           FOR XML PATH ('')
        ), 2, 1000) AS [text]
FROM [dbo].[tab] ST2

对于任何想要play with it

的人

Answer 2

试试这个

SELECT DISTINCT PERSON, STUFF((SELECT ' ' + TEXT
    FROM [YourTable] a
    WHERE a.PERSON = b.PERSON
    ORDER BY PERSON,SEQUENCE
    FOR XML PATH('')),1,1,'') as TEXT
FROM [YourTable] b

如何编写T-SQL查询以连接和分组文本

2 个答案: