INSERT INTO 
    CONVENI_SALE_2018(SURVEY_YEAR, PF_CODE, TOTAL_VALUE)
-- VALUES   -- サブクエリの場合VALUESは不要
SELECT
    SURVEY_YEAR
    , PF_CODE
    , TOTAL_VALUE
FROM
    CONVENIENCE
WHERE
    SURVEY_YEAR = 2018
    AND
    KIND_CODE = 100 -- 販売額
    AND
    TOTAL_VALUE IS NOT NULL
;