tblTasks
TaskID,AssignedTo
1, Zohair Yousafi
tblTaskHistory
TaskID,TaskStatus
1, New
1, In Progress
1, Completed
1, Reopened
1, In Progress
1, Completed
1, Reopened
I want to be able to count how many times Zohair Yousafi's tasks were reopened. The count should be distinct as both tables have...