Running count hourly from table with no timestamp

Thanks for your help!!

I dont want to retrieve the time of my report run and writing it to sql.

I just want to run the report at fixed hour of the day and then counting the records between different sets of hours.

like I am able to retrieve the data like this

Time                countof orders

9AM               69

at 10 AM

9AM       60

10AM     60

at 11AM

9AM    57

10AM   57

11AM   57

(Report will be run at fixed hours, after every one hour)

My problem is , I am unable to retain the count for the prvious hours

I want output like this

9AM   69

10AM  60

11AM   57

is this possible ?

Please note my table doent have timestamp. I created a new calendar table with date and time and joined this date coulumn with date column of my table

Please help...