select greatest(max(col1), max(col2), max(col3), max(col4)) from table works the best, as Keith pointed toward initially. Remember, I forgot to mention that I wanted the greatest for the whole table, not just for each row....so, 10, 12, 8 is not what I wanted...out of
10 2 3 5 4 8 1 12 7 i want 12. thanks again. On 5/27/05, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > I forgot : > > 10, 12, 8 is not a row !!! > > Mathias > > Selon [EMAIL PROTECTED]: > > > Hi Keith, > > yes concat makes an associative lost for max. > > But if we split the desc on all the columns, it works : > > > > mysql> select * from numbers > > -> order by a desc,b desc,c desc > > -> limit 1; > > +------+------+------+ > > | a | b | c | > > +------+------+------+ > > | 10 | 2 | 3 | > > +------+------+------+ > > 1 row in set (0.00 sec) > > > > it's a real desc ordering. > > > > Thanks > > > > Mathias > > > > > > Selon Keith Ivey <[EMAIL PROTECTED]>: > > > > > [EMAIL PROTECTED] wrote: > > > > Hi all, > > > > what is max ? it's the first row when we sort data in descending order. > > > > > > > > so > > > > > > > > select col1,col2,col3,col4 ... from table > > > > order by concat(col1,col2,col3,col4 ... ) desc > > > > LIMIt 1; > > > > > > > > should be silar to what is needed. I say should :o) > > > > > > That would only work if the greatest values for col2, col3, col4, etc., > > > all > > > occurred in the same row with the greatest value for col1, and if all the > > > values > > > for col1 had the same number of digits (and the same for col2, col3, > > > etc.). > > > > > > Consider this table: > > > > > > 10 2 3 > > > 5 4 8 > > > 1 12 7 > > > > > > Your query would give 5, 4, 8 (because "548" as a string is greater than > > > "1023" > > > or "1127"), but he wants 10, 12, 8. > > > > > > -- > > > Keith Ivey <[EMAIL PROTECTED]> > > > Smokefree DC > > > http://www.smokefreedc.org > > > Washington, DC > > > > > > > > > > > > -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
