sql - 查找序列词 SQL

Question

我使用的是 SQL Server 2008，我需要在 Words 表中搜索完整的句子。

单词

ID          LineNum     WordText
----------- ----------- -----------
1           1           i
2           1           love
3           2           i
4           2           love
5           2           ice
6           3           i
7           3           love
8           3           dogs
9           3           too

如果句子是“我爱狗”，则本例中的结果应仅为 ID 6-8。

ID          LineNum     WordText
----------- ----------- ------------
6           3           i
7           3           love
8           3           dogs

Answer 1

试试这个:

SELECT T1.linenum, 
       word = STUFF((
          SELECT ' ' + T2.wordtext
          FROM TableName T2
          WHERE T1.linenum = T2.linenum
          FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'), 1, 1, '')
FROM TableName T1
GROUP BY T1.linenum
ORDER BY T1.linenum

结果:

LINENUM     WORD
----------------------------
1           i love
2           i love ice
3           I love dogs too

查看结果 SQL Fiddle .

编辑:

对于结果列表，这是我能想到的最好的结果:

WITH CTE AS 
(SELECT T1.linenum
    , word = STUFF((
          SELECT ' ' + T2.wordtext
          FROM TableName T2
          WHERE T1.linenum = T2.linenum
          FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'), 1, 1, '')
FROM TableName T1
GROUP BY T1.linenum)
SELECT T3.*
FROM CTE JOIN
TableName T3 ON CTE.linenum=T3.linenum
WHERE CTE.word LIKE '%I love dogs%'

结果:

ID  LINENUM WORDTEXT
6   3       I
7   3       love
8   3       dogs
9   3       too

SQL Fiddle 中的示例结果.