Select 来自另一个 table 的多个值,并放入一个字符串中 -

Select multi value from another table and put in one string split by -

我在 MS SQL 服务器中有 2 个表。

Table 1

ID   Name  
-------------
10   Series      
11   Movie      
12   Music      
13   Other     

Table 2

ID    IDCatg    Value  
---------------------------
1       10          Hannibal
2       10          Blacklist
3       10          POI
4       11          Hitman
5       11          SAW
6       11          Spider man
7       12          taylor swift
8       12          britney spears

我想在 Table 2 中通过 IDCatg select 并在 Table 1 中创建一个新列,如下所示:

IDCatg     Name        Value
--------------------------------------------
10         Series      Hannibal-Blacklist-POI
11         Movie       Hitman-SAW-Spider man
12         Music       taylor swift-britney spears

如何通过视图执行此操作?

您可以使用 STUFF:

SELECT T21.IDCatg, T1.Name,
      [Value] = STUFF((
          SELECT '-' + T22.[Value]
          FROM Table2 T22
          WHERE T21.IDCatg = T22.IDCatg
          FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'), 1, 1, '')
FROM Table2 T21 JOIN 
     Table1 T1 ON T1.ID=T21.IDCatg
GROUP BY T21.IDCatg,T1.Name

结果:

IDCatg  Name    Value
---------------------------------------------
10      Series  Hannibal-Blacklist-POI
11      Movie   Hitman-SAW-Spider man
12      Music   taylor swift-britney spears

示例结果 SQL Fiddle

编辑:

Value的类型为int时,可以转为varchar:

  [Value] = STUFF((
      SELECT '-' + CAST(T22.[Value] AS Varchar(MAX))