Posted by Erland Sommarskog on 04/11/06 01:09

(dale.zjc@gmail.com) writes:
> Thanks for the quick response!
>
> Here's my complete query:
>
> SELECT Object.Name, Job.JobID, MAX(Data.[Value]) as NewValue,
> DATEADD(S, Data.[Time], '1jan1970') AS EventDate,
> Job.KSName, GETDATE() AS CURDATE
>
> FROM DataHeader INNER JOIN
> Data ON DataHeader.DataID = Data.DataID INNER JOIN
> Object INNER JOIN
> Job ON Object.ObjID = Job.MachineObjID ON
> DataHeader.JobID = Job.JobID
>
> Group By Job.JobID

This is possible correct version of your query, but most probably not.
It's just a piece of guesswork.

SELECT o.Name, j.JobID, mx.NewValue,
DATEADD(ss, d.[Time], '1 jan 1970') AS EventDate,
j.KSName, GETDATE() AS CURDATE
FROM (SELECT j.JobID, NewValue = MAX(d.[Value])
FROM DataHeader dh
JOIN Job j ON dh.JobID = j.JobID
JOIN Data d ON dh.DataID = d.DataID) AS mx
JOIN Job j ON mx.JobID = j.JobID
JOIN DataHeader dh ON dh.JobID = j.JobID
JOIN Data d ON dh.DataID = d.DataID
JOIN Object o ON o.ObjID = j.MachineObjID
GROUP BY j.JobID

For this type of questions it helps if you include descriptions of
your tables, including keys. Preferably in form of CREATE TABLE
statements. Sample data is also a good idea, even better if as
INSERT statements, as that makes it easy to post a tested solution.

--
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
http://www.microsoft.com/sql/prodinfo/previousversions/books.mspx

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