blowup.sql

CREATE OR REPLACE FUNCTION blowup(num BIGINT) RETURNS HSTORE[] AS $$
DECLARE
  result HSTORE[] := '{}';
  i BIGINT;
BEGIN
  FOR i IN 1..num LOOP
    result := array_append(result, ('num=>' || i)::HSTORE);
  END LOOP;

  RETURN result;
END
$$ LANGUAGE PLPGSQL IMMUTABLE;