Re: Group by with insensitive order - Mailing list pgsql-general

> Easy way is something like
>
> SELECT LEAST(drug1, drug2), GREATEST(drug1, drug2), AVG(response)
> FROM data
> GROUP BY 1, 2
>
> though it'd be a PITA to scale that to more than 2 drugs.
>
>             regards, tom lane

Thanks, Tom and Hubert, who said the same thing.  For the foreseeable future, two drug combos are all we're going to be
doing. That's bad enough with over 8000 combos of two.  

-Aram