$sql = 'SELECT status FROM tablename';
而结果
------------
status
------------
assigned
assigned
assigned
assigned
assigned
accepted
accepted
completed
completed
completed
completed
completed
现在,我能找到的每一个状态
SELECT status, COUNT(status) AS cnt
FROM tname
GROUP BY b.statusName
HAVING (cnt >= 1)
这总计数将给
status cnt
--------------
accepted 2
assigned 5
completed 5
我如何求和只有completed
和accepted
算?
尝试使用子选择吗? –