Task 2 plpgsql done

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+-- Perl Weekly Challenge 195
+-- Task 2
+
+CREATE SCHEMA IF NOT EXISTS pwc195;
+
+CREATE OR REPLACE FUNCTION
+pwc195.task2_plpgsql( list int[] )
+RETURNS int
+AS $CODE$
+DECLARE
+	current int;
+BEGIN
+	CREATE TEMPORARY TABLE IF NOT EXISTS nums( v int, f int default 1, primary key( v ) );
+	TRUNCATE TABLE nums;
+
+	FOREACH current IN ARRAY list LOOP
+		INSERT INTO nums AS frequency
+		SELECT current, 1
+		ON CONFLICT (v)
+		DO UPDATE SET f = frequency.f + 1;
+	END LOOP;
+
+	SELECT v
+	INTO current
+	FROM nums
+	WHERE v % 2 = 0
+	ORDER BY f DESC, v ASC
+	LIMIT 1;
+
+	RETURN current;
+END
+$CODE$
+LANGUAGE plpgsql;