use gather of a column with Group By in sql - asp.net

Question

I have a table in sql that store statistics of visits, and have below columns:
referredURL
searchedWord(words that lead the user to this page)
Hittime
I want a report of this table with below column:
- refferedURL
- recenReferDate
- allSearchedWors
select ReferredURL , MAX (HitTime) as 'Recent refer date'
from statTbl
GROUP BY ReferredURL
I have problem for gathering allSearchedWords, how can I gather all of the searchedWord of a group and use it as a column?

Answer 1

If you're using SQL Server try
SELECT t.ReferredURL,
MAX (t.HitTime) 'Recent refer date',
(
STUFF((SELECT DISTINCT ',' + SearchedWord
FROM statTbl
WHERE ReferredURL = t.ReferredURL
FOR XML PATH('')) , 1 , 1 , '' )
) 'Searched Words'
FROM statTbl t
GROUP BY t.ReferredURL;
If you need all words to be present even duplicates ditch DISTINCT from the subquery.
Here is SQLFiddle example for SQL Server
If it is MySql then
SELECT t.ReferredURL,
MAX(t.HitTime) 'Recent refer date',
GROUP_CONCAT(DISTINCT(SearchedWord)) 'Searched Words'
FROM statTbl t
GROUP BY t.ReferredURL;
Here is SQLFiddle example for MySql
Sample data
| REFERREDURL | HITTIME | SEARCHEDWORD |
-----------------------------------------------------------
| url1 | May, 22 2013 00:00:00+0000 | apple |
| url1 | May, 22 2013 12:00:00+0000 | banana |
| url1 | May, 22 2013 18:00:00+0000 | pear |
| url1 | May, 22 2013 18:05:00+0000 | apple |
| url2 | May, 22 2013 23:00:00+0000 | apple |
Sample output
| REFERREDURL | RECENT REFER DATE | SEARCHED WORDS |
----------------------------------------------------------------
| url1 | May, 22 2013 18:05:00+0000 | apple,banana,pear |
| url2 | May, 22 2013 23:00:00+0000 | apple |