select
    CASE strftime('%w',SALES_DATE)
        WHEN '0' THEN '日'
        WHEN '1' THEN '月'
        WHEN '2' THEN '火'
        WHEN '3' THEN '水'
        WHEN '4' THEN '木'
        WHEN '5' THEN '金'
        WHEN '6' THEN '土'
        END AS WEEK,
    
FROM SALES,
WHERE 
ORDER BY