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Query

Posted on 2014-11-21
13
Medium Priority
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101 Views
Last Modified: 2014-12-08
Hi,

I have a query that result in this

 APPLICATIONID    APPLICATIONNAME      TO_APPID            TO_APPNAME 
35                               test0                              554                           Name1  
436                             test 1                                538                        Name2  
436                            test2                                542                        Name3    
436                            test3                                185                       Name4   
436                            test4                                123                       Name5  
2048                         test5                                 120                       Name6    
2048                        test6                                 2049                      Name7  



I need a query that gives me this output:

AppID: 
35
554
436
538
542
185
123
2048
120
2049

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0
Comment
Question by:lulu50
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13 Comments
 
LVL 20

Expert Comment

by:dsacker
ID: 40457944
Try this:
SELECT DISTINCT APPID
FROM (SELECT APPLICATIONID AS APPID FROM MyTable UNION ALL
      SELECT TO_APPID AS APPID FROM MyTable) t1

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Obviously, replace "MyTable" with whatever really is your table name. Good luck.
0
 
LVL 66

Expert Comment

by:Jim Horn
ID: 40457958
<very wild guess based only on the above set>
SELECT a.value 
FROM (
   SELECT APPLICATIONID as value, TO_APPNAME, 1 as sort_order
   FROM YOUR_TABLE
   UNION ALL
   SELECT TO_APPID as value, TO_APPNAME, 2 as sort_order
   FROM YOUR_TABLE) a
ORDER BY a.TO_APPNAME, a.sort_order

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0
 
LVL 66

Expert Comment

by:Jim Horn
ID: 40457968
Looks like we cross-posted, sorry.  Please try both out, as we're not connected to your source of data so we can't test, giving dsacker's T-SQL priority as he posted first.
0
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LVL 59

Expert Comment

by:HainKurt
ID: 40457989
is order important?
0
 

Author Comment

by:lulu50
ID: 40457990
this query get me 

SELECT AFW.ApplicationID, AFW.ApplicationName, AFW.AppID_To AS To_AppID, AR.ApplicationName AS To_AppName 
FROM [dbo].Application_From_View AFW LEFT OUTER JOIN [dbo].AppRepository AR ON (AFW.AppID_To=AR.ApplicationID) 
WHERE AR.ApplicationName is not null and AR.retired=0 
ORDER BY AFW.ApplicationName, AR.ApplicationName 

get me this output


APPLICATIONID    APPLICATIONNAME      TO_APPID            TO_APPNAME 
35                               test0                              554                           Name1  
436                             test 1                                538                        Name2  
436                            test2                                542                        Name3    
436                            test3                                185                       Name4   
436                            test4                                123                       Name5  
2048                         test5                                 120                       Name6    
2048                        test6                                 2049                      Name7  

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0
 
LVL 59

Expert Comment

by:HainKurt
ID: 40457997
i guess if it the order is not important, here it is

select ApplicationID from [dbo].Application_From_View
union
select AppID_To from [dbo].Application_From_View

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0
 

Author Comment

by:lulu50
ID: 40458004
I am confused????
0
 
LVL 59

Expert Comment

by:HainKurt
ID: 40458012
:) to be confused is normal... and you are confusing us by adding more info on every post, which changes the solutions...

try this, as is:

select AFW.ApplicationID  from (
	select ApplicationID from [dbo].Application_From_View
	union
	select AppID_To from [dbo].Application_From_View
) AFW inner join [dbo].AppRepository AR ON AFW.ApplicationID=AR.ApplicationID AND AR.retired=0 

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0
 
LVL 20

Expert Comment

by:dsacker
ID: 40458031
Considering the progressive revelations of the table(s) involved, if you take HainKurt's suggestion, simply change it to:

select DISTINCT AFW.ApplicationID ...

And since the desired results are sorted, add:

ORDER BY ApplicationID

... at the bottom.
0
 
LVL 59

Expert Comment

by:HainKurt
ID: 40458037
UNION eliminates duplicates, so no need for "DISTINCT"

agreed on second part, an order is always useful on application side... should always add some sort to queries, unless it is absolutely not necessary or creating performance issues...
0
 
LVL 49

Expert Comment

by:PortletPaul
ID: 40458946
Depending on what that view is doing, there may be no need for multiple queries and hence no need for either UNION or DISTINCT.

Please try this:
SELECT
      AR.ApplicationID
FROM [dbo].AppRepository AR
WHERE AR.retired = 0
ORDER BY
      AR.ApplicationID
;

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0
 
LVL 52

Accepted Solution

by:
Vitor Montalvão earned 2000 total points
ID: 40461677
If you don't mind to have a row order column in the result then you can try this solution:
WITH App_CTE( AppID, RowID) AS 
(
	SELECT AFW.ApplicationID, ROW_NUMBER() OVER(ORDER BY AFW.ApplicationName, AR.ApplicationName ) AS Row
	FROM [dbo].Application_From_View AFW 
	LEFT OUTER JOIN [dbo].AppRepository AR ON (AFW.AppID_To=AR.ApplicationID) 
	WHERE AR.ApplicationName is not null and AR.retired=0 
	UNION ALL
	SELECT AFW.AppID_To, ROW_NUMBER() OVER(ORDER BY AFW.ApplicationName, AR.ApplicationName ) AS Row
	FROM [dbo].Application_From_View AFW 
	LEFT OUTER JOIN [dbo].AppRepository AR ON (AFW.AppID_To=AR.ApplicationID) 
	WHERE AR.ApplicationName is not null and AR.retired=0 
)
SELECT AppId, MIN(RowID)
FROM App_CTE
GROUP BY AppID
ORDER BY 2, 1

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0
 

Author Closing Comment

by:lulu50
ID: 40486639
Thank you
0

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