hi list.
does anyone here knows of a function that is similar to the sum function but
involves more than one column? for example, i have a table with columns id,
col1, col2 and col3. i want to get the max value from the three columns gruped
by an id.
what i came up with is something like this:
max1=select max(one) from (select sum(col1) as one from table group by id);
max2=select max(two) from (select sum(col2) as two from table group by id);
max3=select max(three) from (select sum(col3) as three from table group by
id);
then i compare the 3 max values and get the maximum of the 3.
is there an easier way to do this?
thanks.
ryanne
