显示表格中的逗号分隔值

我曾问过同一模式的问题。这一次我的要求是从表中获取输出。对于模式，请参阅该question显示表格中的逗号分隔值

现在我想从映射表查询公司ID和显示的类别为逗号分隔值的所有子类别。情景就像这样。如果我以公司标识1登录并且我有3个不同的类别。然后在我的网格，它会显示：

**Category**         **Subcategory** 

Category1    SubCat1, Subcat2, Subcat3 and so on 
Category2    SubCat4, Subcat62, Subcat6 and so on

我现有的查询是这样的：

SELECT tbl_Category.Name , dbo.fnGetCSValues(@CompanyId) AS Subcategory 
     FROM tbl_Company_Category_Map 
    INNER JOIN tbl_Category ON tbl_Company_Category_Map.CategoryId = tbl_Category.Id 
    INNER JOIN tbl_SubCategory ON tbl_Company_Category_Map.SubCategoryId = tbl_SubCategory.Id 
    WHERE tbl_Company_Category_Map.CompanyId = @CompanyId 
    GROUP BY tbl_Category.Name

随着UDF

ALTER FUNCTION [dbo].[fnGetCSValues] (@Id INT) 

RETURNS VARCHAR(8000) 
AS 
BEGIN 

DECLARE @List VARCHAR(8000) 
SELECT @List =(SELECT tbl_SubCategory.Name  
       FROM  tbl_Company_Category_Map INNER JOIN 
          tbl_Category ON tbl_Company_Category_Map.CategoryId = tbl_Category.Id INNER JOIN 
          tbl_SubCategory ON tbl_Company_Category_Map.SubCategoryId = tbl_SubCategory.Id 
       WHERE tbl_Company_Category_Map.CompanyId = @Id 
       ORDER by tbl_SubCategory.Name 

       FOR XML PATH('')) 
RETURN LEFT(@List,(LEN(@List) -1)) 
END

来源

2011-07-11 Amit Ranjan

参见：HTTP：//archive.msdn .microsoft.com/SQLExamples/Wiki/View.aspx？title = createacommadelimitedlist – Magnus

那么问题是什么？ UDF不能为您带来正确的结果，还是其他的...？ –

我得到了同样的行... –

Declare @Table Table 
(
    Category varchar(100),Subcategory varchar(MAX) 
) 
insert into @Table 
Select 'Category1','SubCat1,Subcat2,Subcat3' UNION ALL 
Select 'Category2','SubCat4,Subcat62,Subcat6' 



--1st option to use master..sptvalue 

Select Category,SUBSTRING(',' + Subcategory + ',', n.Number + 1, CHARINDEX(',', ',' + Subcategory + ',', n.Number + 1) - n.Number - 1) 
From @Table As T 
Cross Join master..spt_values As n 
WHERE n.Type = 'p' 
AND n.Number > 0 
AND n.Number < LEN(',' + Subcategory + ',') 
and SUBSTRING(',' + Subcategory + ',', n.Number, 1)=',' 

--2nd option to use split function 
CREATE FUNCTION [dbo].[Split](@String varchar(8000), @Delimiter char(1))  
returns @temptable TABLE (items varchar(8000))  
as  
begin  
    declare @idx int  
    declare @slice varchar(8000)  

    select @idx = 1  
     if len(@String)<1 or @String is null return  

    while @idx!= 0  
    begin  
     set @idx = charindex(@Delimiter,@String)  
     if @idx!=0  
      set @slice = left(@String,@idx - 1)  
     else  
      set @slice = @String  

     if(len(@slice)>0) 
      insert into @temptable(Items) values(@slice)  

     set @String = right(@String,len(@String) - @idx)  
     if len(@String) = 0 break  
    end 
return  
end 

--call query here 
Select Category,items as Subcategory 
From @Table As T 
Cross Apply dbo.Split(Subcategory,',')

来源

2011-07-11 13:16:33

显示表格中的逗号分隔值

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