Hi, Mike Works like a charm. Thank you very much.
Btw, I have googled a lot before posting here. All I found was how to get the max value from a table, not the value from the field next to it. Bummer. :( ----- Original Message ----- From: "Mike yearwood" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Sunday, March 02, 2008 6:23 PM Subject: Re: SQL Select help needed > Hi Grigore > > The most reliable way I've found is to: > > SELECT ; > Id, ; > Serial, ; > Model, ; > LatestRegistration.RegNumber, ; > LatestRegistration.RegDate ; > FROM Cars > LEFT OUTER JOIN ; > (SELECT ; > Regtmp.CarID, ; > Regtmp.RegNumber, ; > Regtmp.RegDate ; > FROM Registrations Regtmp ; > INNER JOIN ; > (SELECT ; > CarID, ; > MAX(RegDate) AS MaxDate ; > FROM ; > Registrations ; > GROUP BY ; > CarID) MaxReg ; > ON Regtmp.CarId = MaxReg.CarId ; > AND Regtmp.RegDate = MaxReg.MaxDate) ; > LatestRegistration ; > ON Cars.Id = LatestRegistration.CarId ; > > This approach guarantees you have the fields from the registration > record for the latest registration. The normal group by approach will > give you the max registration date, but not necessarily the > corresponding registration number. > > HTH > > Mike Yearwood > Fox Ridge Software > >> I have two tables, 1-to-many related. Parent table contains car >> information, child table contains the registration numbers, with their >> date, as they change. >> >> Parent table fields: >> >> Id, Serial, Model >> >> Child table fields: >> >> Id, CarId, RegNumber, RegDate >> >> >> How the heck the SQL that returns a list of the cars with their most >> recent registration number looks like? I just can't figure it. >> > > [excessive quoting removed by server] _______________________________________________ Post Messages to: [email protected] Subscription Maintenance: http://leafe.com/mailman/listinfo/profox OT-free version of this list: http://leafe.com/mailman/listinfo/profoxtech Searchable Archive: http://leafe.com/archives/search/profox This message: http://leafe.com/archives/byMID/profox/[EMAIL PROTECTED] ** All postings, unless explicitly stated otherwise, are the opinions of the author, and do not constitute legal or medical advice. This statement is added to the messages for those lawyers who are too stupid to see the obvious.
