select x,y,z from t join (select x, max(y) as my from t group by x) t1 on (t.x=t1.x and t.y=t1.my)
best wishes Harald On Thu, Sep 25, 2008 at 20:01, Kynn Jones <[EMAIL PROTECTED]> wrote: > Suppose I have a table T that has, among its columns, the fields X and Y, > where Y is an integer, and multiple rows with the same value of X are > possible. I want to select the rows corresponding to the greatest values of > Y for each value of X. E.g. suppose that T is > X Y Z > a 1 eenie > a 3 meenie > a 2 miny > b 4 moe > b 0 catch > ...the result of the desired query would be > a 3 meenie > b 4 moe > TIA! > Kynnjo > > > -- GHUM Harald Massa persuadere et programmare Harald Armin Massa Spielberger Straße 49 70435 Stuttgart 0173/9409607 no fx, no carrier pigeon - EuroPython 2009 will take place in Birmingham - Stay tuned! -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
