Re: Largest & Smallest Functions

You can pass variadic arguments as a array

postgres=# \sf smallest
CREATE OR REPLACE FUNCTION public.smallest(VARIADIC anyarray)
 RETURNS anyelement
 LANGUAGE sql
 IMMUTABLE
AS $function$
    SELECT min($1[i]) FROM generate_subscripts($1, 1) g(i);
$function$

postgres=# select smallest(VARIADIC ARRAY[1,2,3]);
┌──────────┐
│ smallest │
╞══════════╡
│        1 │
└──────────┘
(1 row)