all groups > sql server (alternate) > november 2005 >
You're in the

sql server (alternate)

group:

problem with Select query


problem with Select query Sandy
11/21/2005 12:00:00 AM
sql server (alternate):
Hi,

I have a table A (ID, time,...)

first I want to select rows with max value of time. Then from these rows I
want the row with max ID value.
i am doing the following but its giving me the error mentioned below

select max(ID) from (select * from A where time in ( select max(time) from
A ) )
ERROR: Incorrect syntax near ')'

Where is the problem in my Query. Is there any other way to do this??

any help is greatly appreciated.

Thanks

Re: problem with Select query CK
11/21/2005 12:00:00 AM
Would this only give the the value of max ID as a result? I think Sandy
wants the complete row which has the max ID value.


[quoted text, click to view]

Re: problem with Select query Jens
11/21/2005 1:53:16 AM
This could be a solution:


Select MAX(ID) FROM SomeTable
Where Time =
(
Select MAX(Time) From SomeTable
)

You were missing the aliases:


select max(ID) from
(
select * from A where time in
(
select max(time) from A
) SubQuery1
) SubQuery2


HTH, Jens Suessmeyer.
Re: problem with Select query --CELKO--
11/21/2005 5:38:35 PM
Please post DDL, so that people do not have to guess what the keys,
constraints, Declarative Referential Integrity, data types, etc. in
your schema are. Sample data is also a good idea, along with clear
specifications. It is very hard to debug code when you do not let us
see it.

Also data element names like "id" (of what entity?) and time (a
reserved word in SQL) are pretty useless. I am sure that 'A' is a
meaningful name in your industry ...
Re: problem with Select query Erland Sommarskog
11/21/2005 9:53:20 PM
Sandy (a@a.com) writes:
[quoted text, click to view]

The problem is that the derived tables requires aliases:

select max(ID) from (select * from A where time in ( select max(time)
from A ) AS X ) AS Y

But maybe this query serves you better:

SELECT A.ID, A.time
FROM A
JOIN (SELECT time = MAX(time) FROM A) AS A1 ON A.time = A1.time



--
Erland Sommarskog, SQL Server MVP, esquel@sommarskog.se

Books Online for SQL Server 2005 at
http://www.microsoft.com/technet/prodtechnol/sql/2005/downloads/books.mspx
Books Online for SQL Server 2000 at
Got something to say? Click here to post a reply to this thread.
Don't see what you're looking for? Try a search.
View other messages in the sql server (alternate) group.
AddThis Social Bookmark Button
View Other Months
January 2003
June 2003
July 2003
August 2003
September 2003
October 2003
November 2003
December 2003
January 2004
February 2004
March 2004
April 2004
May 2004
June 2004
July 2004
August 2004
September 2004
October 2004
November 2004
December 2004
January 2005
February 2005
March 2005
April 2005
May 2005
June 2005
July 2005
August 2005
September 2005
October 2005
November 2005
December 2005
January 2006
February 2006
March 2006
April 2006
May 2006
June 2006
July 2006
August 2006
September 2006
October 2006
November 2006
December 2006
January 2007
February 2007
March 2007
April 2007
May 2007
June 2007
July 2007
August 2007
September 2007
October 2007
home · blog · groups Questions? Comments? Contact the dn