Rows to comma separated values using XML tag

Question

I have 2 tables named \'Categories\' and \'CSTagContent\' shown below with data...

TABLE 1: \'Categories\'

CategoryID  PostID  <-         


        

Answer 1

SAMPLE TABLES

SELECT * INTO Categories
FROM
(
   SELECT 1148 CategoryId, 581771 PostId
   UNION ALL
   SELECT 1183 CategoryId, 581771 PostId
   UNION ALL
   SELECT 1184 CategoryId, 581771 PostId   
)TAB


SELECT * INTO TagContent
FROM
(
SELECT 1 [Id], '
' TagContent ,    '2014-11-08' StartDate, '2014-11-14' EndDate,  1148 CategoryID, NULL TagTitle     

UNION ALL   
SELECT  2, '
',     '2014-11-25', '2014-12-05',  1183,     '
Aging Title
' 


UNION ALL
SELECT  3, '
',     '2014-11-25', '2014-11-27',  1184,     '
Allergies Title
' 
)TAB

Now we convert TagTitle to Ambersand seperated valuesfor the same TagContent. Since XML format is used we need to replace >, < and&to <, > and &.

QUERY

SELECT DISTINCT TagContent,STUFF(REPLACE(REPLACE(REPLACE(REPLACE(SUBSTRING(
        (SELECT '&' + TagTitle
        FROM TagContent T2 
        WHERE ST.TagContent=T2.TagContent 
        FOR XML PATH('')),2,200000),'<','<'),'>','>'),'&','&'),'amp;',''),1,'') TagTitle
        FROM Categories CPC
        JOIN TagContent ST ON CPC.CategoryId=ST.CategoryId

• SQL FIDDLE