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Take multiple records and contain to one

Posted on 2014-04-19
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Last Modified: 2014-04-20
Please see my attached example

I have an output that requires multiple records to be displayed for several activities.  However, I was wondering if I can list all my activities in one record as my attached example shows.

Is there a way to do this in SQL without having multiple records in first example?
Sample.xlsx
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Question by:al4629740
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8 Comments
 
LVL 27

Expert Comment

by:skullnobrains
ID: 40011028
SELECT STUFF(
             (SELECT ',' + Activity
              FROM Table_Name
              FOR XML PATH (''))
             , 1, 1, '')

you'll need to add require group by clauses and edit the table name.

note that this is specifically complicated in sql server as opposed for example to mysql where you can do this using group_concat in a simple select expression
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Author Comment

by:al4629740
ID: 40011283
If my table is called table1,  can you write an example using the fields in the attached document?
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LVL 27

Accepted Solution

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skullnobrains earned 2000 total points
ID: 40011324
try this, and bare with me by trying to debug minor typos : i do not have an ms sql server around and hardly ever used one for years.

assuming you have several agencies, i added a where clause in the subquery.
this requires to rename the table in the subquery, which is why it is a little more complex than the example

i used max(FacilityName) and not facilityName because sql server returns an error if you don't use an aggregate with a group by

SELECT Agency,max(FacilityName),
        STUFF((    SELECT ',' + Activity AS [text()]
                          FROM table1 as sub
                         WHERE table1.Agency = sub.Agency
                         FOR XML PATH('')
                     ), 1, 1, '' ) AS [Activities]
FROM  table1
group by Agency
0
What is SQL Server and how does it work?

The purpose of this paper is to provide you background on SQL Server. It’s your self-study guide for learning fundamentals. It includes both the history of SQL and its technical basics. Concepts and definitions will form the solid foundation of your future DBA expertise.

 

Author Comment

by:al4629740
ID: 40011744
Is it possible to select distinct activity in the code you had above?
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LVL 27

Expert Comment

by:skullnobrains
ID: 40011760
i think both distinct or add it to the group by should work but i'm unsure. please post results if you give it a try
0
 

Author Comment

by:al4629740
ID: 40011783
Code used

SELECT [Committee Name],max(FacilityName),
        STUFF((    SELECT ',' + Activity AS [text()]
                          FROM frmUnregisteredEvent as sub
                         WHERE frmUnregisteredEvent.[Committee Name] = sub.[Committee Name]
                         FOR XML PATH('')
                     ), 1, 1, '' ) AS [Activities]
FROM  frmUnregisteredEvent
group by [Committee Name]



attached output
Book1.xlsx
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Author Comment

by:al4629740
ID: 40011784
Notice column 3 has some duplicate activities.
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LVL 27

Expert Comment

by:skullnobrains
ID: 40012059
i think i misunderstood previously : what you want is to prevent having things like "a,b,b,c" in that column.

you can use "select distinct ',' + Activity ... FOR XML PATH" in the inner query. afaik, it should provide the desired results.
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