Question

I have a PostgreSQL table with some doubles, they store precentages. so let’s say the columns are pc_1 and pc_2.

What I want is to order by whichever of these two columns has the highest amount descending, and then by the other column, again descending.

So if our data is as follows:

id  pc_1  pc_2 
 1  12.5  11.0
 2  10.0  13.2
 3  13.2  9.0

select * from mytable order by <something>

Would give:

 2  10.0  13.2
 3  13.2  9.0
 1  12.5  11.0

Answer 1

SELECT  *
FROM    mytable
ORDER BY
        GREATEST(pc_1, pc_2) DESC, LEAST(pc_1, pc_2) DESC