Question

I’m need a help to create a Query. My problem is I have a StartDate and EndDate and need separate this in blocs of 60 minutes.

DECLARE @STARTDATE AS SMALLDATETIME
DECLARE @ENDDATE AS SMALLDATETIME

SET @STARTDATE = '2012-11-21 11:03:00'
SET @ENDDATE = '2012-11-21 13:04:00'

I need the return:

Hour, Time
11  , 57
12  , 60
13  , 04

Answer 1

You could use a recursive CTE. For example:

declare @startDate datetime = '2012-11-21 22:05:00'
declare @endDate datetime = '2012-11-22 01:06:00'

; with  TimeList as
        (
        select  @startDate as dt
        union all
        select  dateadd(hour, 1, dateadd(hour, datediff(hour, 0, dt), 0))
        from    TimeList
        where   dateadd(hour, 1, dt) < @endDate
        )
select  dt
from    TimeList
union all
select  @endDate

The snippet dateadd(hour, datediff(hour, 0, dt), 0) removes the hours and minutes from a date. It does so by calculating the number of hours since date 0 and then adding that number of hours to date 0.

Live example at SQL Fiddle.