小编use*_*956的帖子

我有一个duedate列(datetime格式),指定票的到期日,现在我需要得到"今天由于"上的比较门票基地now()有duedate.即2010-04-29 02:00vs 2010-04-29 10:00将在此事中返回true.

ticket                      
+----------+--------+
| ticketID | assign |
+----------+--------+
|     1015 | NULL   |
|     1020 | James  |
|     1021 | Nick   |
+----------+--------+

staffinfo
+---------+-------+
| staffID | staff |
+---------+-------+
|       1 | Jane  |
|       2 | James |
|       3 | Nick  |
|       4 | Cole  |
+---------+-------+

SELECT staff,COUNT(*) as count FROM staffinfo,ticket
WHERE ticket.assign = staffinfo.staff
GROUP BY staff

result:
    +-------+-------+
    | staff | count |
    +-------+-------+
    | James |     1 |
    | …