How to get one week data in SQL

Question

Hi Team,
Have code bellow like but am not getting proper week start and end dates. Please help on same
SELECT DATEADD(DAY, -1 - DATEPART(WEEKDAY, [Report Generated On]), [Report Generated On]) AS StartDate
, DATEADD(DAY, 5 - DATEPART(WEEKDAY, [Report Generated On]), [Report Generated On]) AS EndDate
,DATEPART(ww,[Report Generated On]) WeekNumber
,[Status]
,COUNT([MF No]) BookingCount
FROM tblName
where [Report Generated On] >='2021-02-19'
AND [Report Generated On] <'2021-02-26'
group by DATEADD(DAY, -1 - DATEPART(WEEKDAY, [Report Generated On]), [Report Generated On])
, DATEADD(DAY, 5 - DATEPART(WEEKDAY, [Report Generated On]), [Report Generated On])
,DATEPART(ww,[Report Generated On])
,[Status]

My Results:

Answer 1

Hi @Bala Narasimha Challa ,

For this type of problem we recommend that you post CREATE TABLE statements for your tables together with INSERT statements with sample data, enough to illustrate all angles of the problem. We also need to see the expected result of the sample.

What is your expected first day of one week? Sunday?Monday? Another day?

Sunday is the default one. If you would like to set aother weekday as first day of one week, you could add SET DATEFIRST.

Your query could be as below:

  set datefirst 7  --default,set Sunday as first day of week, you could change this value accordingly   
  
SELECT DATEADD(DAY, 1 - DATEPART(WEEKDAY, [Report Generated On]), [Report Generated On]) AS StartDate  
, DATEADD(DAY, 7 - DATEPART(WEEKDAY, [Report Generated On]), [Report Generated On]) AS EndDate  
,DATEPART(ww,[Report Generated On]) WeekNumber  
,[Status]  
,COUNT([MF No]) BookingCount  
FROM tblName  
where [Report Generated On] >='2021-02-19'  
AND [Report Generated On] <'2021-02-26'  
group by DATEADD(DAY, 1 - DATEPART(WEEKDAY, [Report Generated On]), [Report Generated On])  
, DATEADD(DAY, 7 - DATEPART(WEEKDAY, [Report Generated On]), [Report Generated On])  
,DATEPART(ww,[Report Generated On])  
,[Status]  

Best regards
Melissa

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