按自然周的日期和自然周统计:
select to_char(next_day(t.sort_date+15/24 - 7,2),'YYYY-MM-DD') as 日期, to_char(t.sort_date,'iw') AS 周,sum(1) as 数量
from jc_content t WHERE t.status != '3'
group by to_char(next_day(t.sort_date+15/24 - 7,2),'YYYY-MM-DD') ,to_char(t.sort_date,'iw')
ORDER BY 日期 desc;