Comments on: SQL Puzzle: SQL Advance Query – Find the Week start day and Week end day for given Month https://www.dbrnd.com/2019/04/sql-puzzle-sql-advance-query-find-the-week-start-day-and-week-end-day-for-given-month/ BIGData | NoSQL | MSSQL | MySQL | PostgreSQL Fri, 26 Apr 2019 03:05:14 +0000 hourly 1 https://wordpress.org/?v=7.0.4 By: Bhvin Katrodiya https://www.dbrnd.com/2019/04/sql-puzzle-sql-advance-query-find-the-week-start-day-and-week-end-day-for-given-month/#comment-7028 Fri, 26 Apr 2019 03:05:14 +0000 https://www.dbrnd.com/?p=6181#comment-7028 DECLARE @Month INT = 4
DECLARE @Year INT = 2019

DECLARE @FirstDate DATE = DATEFROMPARTS(@Year,@Month,1)
DECLARE @EndDate DATE =EOMONTH(@FirstDate)
SELECT @FirstDate, @EndDate

; WITH CTE AS (
SELECT @FirstDate AS FirstDate, DATEADD(DAY,(8 – DATEPART(WEEKDAY,@FirstDate)),@FirstDate) as WEDay
UNION ALL
SELECT DATEADD(DAY,1,FirstDate),DATEADD(DAY,(8 – DATEPART(WEEKDAY,FirstDate)),FirstDate)
FROM CTE
WHERE
FirstDate @EndDate THEN @EndDate ELSE WEDay END AS WeekEndDate
from CTE
GROUP BY WEDay

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