Question Regarding Date Range

Hi,

I have a table containing courses, columns are 

Name - "Yoga Classes"

DateStart - "2/23/2010"

DateEnd - "2/24/2010"

I am using ListView Control to bind it, is there a way to display them and group them by Month? 

for eg.

January

Piano Class (10th Jan 2010 - 11th Jan 2010)
Guitar Class (10th Jan 2010 - 11th Jan 2010)

February 

Yoga Class (15th Feb 2010 - 16th Feb 2010)
 etc...

Thanks for help.

Hi,

I'm building a report in Crystal Reports using a SQL command against a T-SQL 2005 telephony database.

I need to be able to run the query across a given datetime range, 6 months for example and bring back a 5 day display (Mon-Fri) with a group for every 15 minute interval in each day.

The group figures need to contain an average of the amount of calls presented for each 15 minute interval on any day across the whole datetime range, so for example the Monday 10:00 - 10:15 figure would be an average of all calls presented in every 10:00-10:15 range on each of the Mondays that fall within the datetime range.

I've got a query built now that gives total presented figures grouped by these intervals across one week but I can't figure out how to do this average function across a range.

Does anyone have any idea how I'd go about accomplishing this? I'm pretty new to SQL but keen to learn so any pointers on functions to research etc would be very much appreciated.

Thanks alot in advance, Andy.

Query for detail view across one week included below for table/fields etc...

SELECT

count(DISTINCT Calls.SessionID) as Presented, min(Calls.startDateTime) as DateTime

FROM
Calls
INNER JOIN QueueDetail
ON Calls.sessionID =  Queues.sessionID
AND Calls.sessionSeqNum =  QueueDet

I'd like to validate if the inputed date is within this range:

3 weeks before today's date to 3 weeks after today's date 

The following Javascript code checks if the date is within either today's date or 2 weeks before:

var dateSystem = (dateToday.getMonth() + 1) + dtCh + dateToday.getDate() + dtCh + dateToday.getFullYear();
            var prev = new Date();
            //past date 14 dates before today
            prev.setDate(prev.getDate() - 14);
            var pastDate = (prev.getMonth() + 1) + dtCh + (prev.getDate()) + dtCh + prev.getFullYear();
            var time1 = new Date(dateSystem).getTime();
            dtStr = month + dtCh + day + dtCh + year;
            var dateuser = new Date(dtStr);
            var time2 = dateuser.getTime();
            if (time1 - time2 <= 1209600000 && time2 <= time1) {
                return true;
            } else {
                alert("Vaccines/Services date must be within this date range: " + pastDate + " to " + dateSystem);
                return false
            }
            return true
        }

I'm not sure how to modify. I actually got the code above from these forums.

Help is much appreciated!

Hi,

when I am joining two tables where one table has two columns which specify a date range and the other table has one column with a single date which must be in that range for a join, then the performance is not so hot. The T-SQL example only shows the basic query scheme, in reality there are appropriate indexes (but not on the date columns since I found them not helpful) and the DateRange column has about 100 mio rows and the Incident table about 200,000 rows. The query currently takes hours, I must speed it up by at least factor 10.

TIA for any ideas. Regards
Tim

DECLARE @DateRange TABLE (
	[DateRangeID] [int] NOT NULL PRIMARY KEY,
	[RangeTypeID] [smallint] NOT NULL,
	[StartDate] [date] NOT NULL,
	[EndDate] [date] NOT NULL)

DECLARE @Incident TABLE (
	[IncidentID] [int] NOT NU