> CREATE OR REPLACE FUNCTION array_add(int[],int[]) RETURNS int[] AS $$ > -- Add two arrays. > select > ARRAY ( > SELECT coalesce($1[i],0) + coalesce($2[i],0) > FROM ( > select generate_series(least(array_lower($1, 1),array_lower($2, > 1)), greatest(array_upper($1, 1),array_upper($2, 1)), 1) AS i > ) sub > GROUP BY i > ORDER BY i > ); > $$ LANGUAGE sql STRICT IMMUTABLE; it seems that both the GROUP and ORDER BY are superfluous and adding some cycles. regards, Marc Mamin -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
