select
    WEEK,
    AVG_CNT,
    case when length(AMT) > 6
         then substr(AMT,1,length(AMT)-6) || ',' || substr(AMT,length(AMT)-5,3) || ',' || substr(AMT,length(AMT)-2,3)
         when length(AMT) > 3
         then substr(AMT,1,length(AMT)-3) || ',' || substr(AMT,length(AMT)-2,3) else AMT
    end||'円' AS AVG_AMT
from(
select
    case week_num
        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'
    else '？' end AS WEEK,
    cast(round(avg(cnt),0) AS INT) AS AVG_CNT,
    cast(round(avg(day_sum_amt),0) AS INT) AS AMT
from (
        select strftime('%w', sales_date) as week_num,
                sum(sales_amt) as day_sum_amt,
                count(sales_no) as cnt
        from sales
        where updated_no is null and sales_type != 2
        group by sales_date
    )
group by week_num
order by week_num)