Question

I need to generate records on given start-date, end-date and time frequency(Weekly, Monthly etc.)

Example-1:

1. Start Date: 15 Jan 2011
2. End Date: 31 Dec 2011
3. Frequency: Monthly

Generated Reports:

1. 15 Jan – 31 Jan

2. 1 Feb – 28 Feb (29 Feb Leap Year)

3. 1 March – 31 March

.
.
.

• 4- 1 Dec – 31 Dec

Example-2

• Start Date: 15 Jan 2011
• End Date: 31 Dec 2011
• Frequency: Weekly

Generated Reports:

• 1- 15 Jan – 16 Jan

• 2- 17 Jan – 23 Jan

• 3- 24 Jan – 30 Jan

.
.
.

• 50- 26 Dec – 31 Dec

Same as Quarterly.

Any Help

Answer 1

I think what you’re asking is basically how to loop through months/weeks/quarters.

This should give you a good start to point you in the right direction I hope. You just have to muck around with the built in SQL date functions like DATEADD, DATEDIFF & DATEPART

DECLARE @startDate DATETIME
DECLARE @endDate DATETIME
DECLARE @TimePeriod NVARCHAR(50)
DECLARE @RptDate DATETIME

SET @startDate = '1/15/2011'
SET @endDate = '12/31/2011'
SET @TimePeriod = 'Monthly'

SET @RptDate = @startDate
WHILE @RptDate < @endDate
BEGIN
    PRINT @RptDate      --- This prints out the dates I think you want
    IF @TimePeriod = 'Monthly'
        SET @RptDate = DATEADD(mm, 1, DATEADD(dd, -DAY(@RptDate) + 1,@RptDate))

    IF @TimePeriod = 'Weekly'
        SET @RptDate = DATEADD(ww, 1, DATEADD(dd, -DATEPART(weekday,@RptDate) + 1,@RptDate))

    IF @TimePeriod = 'Quarterly'
        SET @RptDate = DATEADD(qq, 1, DATEADD(qq, DATEDIFF(qq, 0, @RptDate), -1) + 1)

END