Question

有人可以帮我把计数值合并在一起吗？

 Select count(*) from swtickets
 inner join swdepartments on swtickets.departmentid = swdepartments.departmentid
 inner join swticketstatus on swtickets.ticketstatusid = swticketstatus.ticketstatusid
 inner join swticketpriorities on swtickets.priorityid = swticketpriorities.priorityid
 where
 swdepartments.title = "XXX" and
 swticketstatus.title = "Open"

上面输出一个有效的值，但是我们希望将更多的值分组到输出值中;你能帮助我们吗？

 swticketstatus.title = "Open"
 swticketstatus.title = "Driving Job"
 swticketstatus.title = "Project Work"
 swticketstatus.title = "Out of Hours"

Answer 1

我希望你想要这个，

Select count(*) from swtickets
 inner join swdepartments on swtickets.departmentid = swdepartments.departmentid
 inner join swticketstatus on swtickets.ticketstatusid = swticketstatus.ticketstatusid
 inner join swticketpriorities on swtickets.priorityid = swticketpriorities.priorityid
 where
 swdepartments.title = "XXX" and
 (
    swticketstatus.title = "Open"
    OR
    swticketstatus.title = "Driving Job"
    OR
    swticketstatus.title = "Project Work"
    OR
    swticketstatus.title = "Out of Hours"
 )

如果不是OR，您可以使用IN

Select count(*) from swtickets
 inner join swdepartments on swtickets.departmentid = swdepartments.departmentid
 inner join swticketstatus on swtickets.ticketstatusid = swticketstatus.ticketstatusid
 inner join swticketpriorities on swtickets.priorityid = swticketpriorities.priorityid
 where
 swdepartments.title = "XXX" 
 and swticketstatus.title IN("Open","Driving Job","Project Work","Out of Hours")

MySQL：从多个列中选择数据

1 个答案: