MySQL查询表中最近7天数据(无数据自动补0，不含本天)

select a.date,
        ifnull(b.total_count, 0) as total_count,
        from (
        SELECT date_sub(curdate(), interval 1 day) as date
        union all
        SELECT date_sub(curdate(), interval 2 day) as date
        union all
        SELECT date_sub(curdate(), interval 3 day) as date
        union all
        SELECT date_sub(curdate(), interval 4 day) as date
        union all
        SELECT date_sub(curdate(), interval 5 day) as date
        union all
        SELECT date_sub(curdate(), interval 6 day) as date
        union all
        SELECT date_sub(curdate(), interval 7 day) as date
        ) a
        left join (
        select date(create_time) as date,
        count(*) as total_count,
        from report
        where DATE_SUB(curdate(), INTERVAL 7 DAY) <= date(create_time) and date(create_time) < curdate()
        group by date(create_time)
        ) b on a.date = b.date order by a.date;