Columns of second query appears in diff order when use UNION.

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Columns of second query appears in diff order when use UNION.

Joy Smith San

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Points: 24877
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December 15, 2010 at 12:12 am

#146548

Hi All,
--- Results of first query
ServerAppNameVersion
Srvr1App16.1.1016
Srvr1App26.1.1033
Srvr1App35.7.216
--- Results of second query
ServerAppNameVersion
Srvr2App412.5
--- Results when I UNION the above 2 queries.
ServerAppNameVersion
Srvr1App16.1.1016
Srvr1App26.1.1033
Srvr1App35.7.216
12.5Srvr2App4
Why the last row columns (second query results) comes is diff order
Thanks in Advance.

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Mr. Holio Hall of Fame Points: 3314 More actions · Answer 1

Hi,

Could you post that query?

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Allzu viel ist ungesund...

Joy Smith San SSC-Insane Points: 24877 More actions · Answer 2

Thanks for your quick reply.

Problem resolved. First query is Grouped By "AppName"

and second query is Grouped By "Server".

When I made first query to be grouped by "Server, AppName' result is coming properly.

but, I am still not clear why should it make difference based on the group by columns. I dont understand.

Thanks.

WayneS SSC Guru Points: 95460 More actions · Answer 3

I'd really like to see the query you were running also... from what you've said, this shouldn't be happening. The proof is in the code. I'd be very appreciative if you would post it please.

Wayne
Microsoft Certified Master: SQL Server 2008
Author - SQL Server T-SQL Recipes

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Joy Smith San SSC-Insane Points: 24877 More actions · Answer 4

Hi,

Thanks for your response.

I am sorry that I can't post the query here.

I tried to simulate the issue in test, but couldn't.

But beleive me, it's a strange problem. And one more thing...

When I simply quey using "UNION" this issue occurs.

But when I add "top 10 *" with same query, it just works fine.

Anyways, when I am free, will try to put those records in some dummy tables and simulate the same error so that I can show you the error.

Thanks again.