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+--
+-- Perl Weekly Challenge 253
+-- Task 1
+-- See <https://perlweeklychallenge.org/blog/perl-weekly-challenge-253>
+--
+
+CREATE SCHEMA IF NOT EXISTS pwc253;
+
+CREATE OR REPLACE FUNCTION
+pwc253.task1_plpgsql( s char, words text[] )
+RETURNS SETOF text
+AS $CODE$
+DECLARE
+	current_word text;
+BEGIN
+	FOREACH current_word IN ARRAY words LOOP
+		RETURN QUERY
+		SELECT regexp_split_to_table( current_word, '[' || s || ']' );
+	END LOOP;
+
+RETURN;
+END
+$CODE$
+LANGUAGE plpgsql;