text: CREATE OR REPLACE FUNCTION
  qs(
      y ANY TYPE
  ) AS (
      CASE
          WHEN y = 1 THEN 'low'
          WHEN y = 2 THEN 'midlow'
          WHEN y = 3 THEN 'mid'
          WHEN y = 4 THEN 'midhigh'
          WHEN y = 5 THEN 'high'
          ELSE "unknown"
      END
  )
  