Examples
TO_TIME(TO_LOCALTIME(QUANTIZE(TO_TIMESTAMP(date, time), 3600))) AS [Hour]
Create a timestamp from the date and time of a request, drops the minutes from the time, converts it to local time, and pulls just the time.
Queries to help you analyze logs
TO_TIME(TO_LOCALTIME(QUANTIZE(TO_TIMESTAMP(date, time), 3600))) AS [Hour]