SELECT round(cast(AVG(TOTAL_VALUE) as real),0) as SA_MEDIAN
from (SELECT TOTAL_VALUE
      FROM CONVENIENCE
      where SURVEY_YEAR = 2019 and KIND_CODE = '100'
      ORDER BY TOTAL_VALUE desc
      LIMIT 2 - (SELECT COUNT(*) FROM CONVENIENCE where SURVEY_YEAR = 2019 and KIND_CODE = '100') % 2
      OFFSET (SELECT (COUNT(*) - 1) / 2
              FROM CONVENIENCE where SURVEY_YEAR = 2019 and KIND_CODE = '100'));