mysql - return 0 是特定条件的计数为 NULL

Question

select DATE(feed_date) as date, 
       IFNULL(COUNT(id),0) as count 
from table 
where id = 8671 
group by DATE(feed_date);

id当在特定日期没有条目时，我希望“0”作为我的结果中的条目。

Answer 1

select DATE(feed_date) as fdate, 
       SUM(id = 8671) as count 
from table 
group by fdate