[SOLVED] Update Statement

[wayne]

Hi

 

Sorry for simplistic question but new to mysql and having problems figuring how to write an update statement where my select has a group by, wonder if anyone can help as need urgently.

 

I have table called FLATRESULTS

 

column i need to populate with a 'Y' is called FAV

 

Now i need to populate this column for each row with a 'Y' where the racenumber for the row and decodds = min_odds from the query below

 

select racenumber, min(decodds) as min_odds

from flatresults

group by racenumber

 

hope that makes sense, help appreciated.

 

Wayne

 

[Barand]

try

UPDATE flatresults a
INNER JOIN (SELECT racenumber, MIN(decodds) as minodds FROM flatresults GROUP BY racenumber) as x
ON a.racenumber = x.racenumber AND a.decodds = x.minodds
SET a.fav='Y'

[wayne]

Thank You very much Barand, done the trick, much appreciated.