SELECT ROUND(AVG(TOTAL_VALUE),0) AS "SA_MEDIAN"
FROM (
    SELECT TOTAL_VALUE
        FROM CONVENIENCE AS CV
        WHERE CV.KIND_CODE = 100 AND CV.SURVEY_YEAR = 2019
        ORDER BY TOTAL_VALUE
        LIMIT 2 - (SELECT COUNT(*) FROM CONVENIENCE WHERE KIND_CODE = 100 AND SURVEY_YEAR = 2019 ) % 2
        OFFSET (SELECT (COUNT(*) - 1) / 2 FROM CONVENIENCE WHERE KIND_CODE = 100 AND SURVEY_YEAR = 2019)
)