SQL 统计各个等级的房间交易金额，并让折线图程上升趋势

–171 统计各个等级房间的交易金额
if(@type=‘Select_171’)
begin
begin tran
select convert(decimal(18,1),sum(BMoney_num - BDeposit_num)) num,Flevel name from PW_Booking
join IR_Room on IR_Room.Name = PW_Booking.BRoomID
join JC_RoomLevel on IR_Room.LevelID = JC_RoomLevel.LevelID
group by Flevel
select @@identity
commit tran
end