>>Script Language and Platform: SQL Server 2000 User-Defined Functions
This user-defined function will return the Monday before or the Sunday after any given date. I use this function primarily to categorize service activities for our business; our weekly calendar runs from Monday to Sunday.
Usage is simple:
SELECT dbo.udfBusinessWeek(GetDate(), 'B') to return the Monday of this week, and SELECT dbo.udfBusinessWeek(GetDate(), 'E') to return the following Sunday.
Author: Stuart R Ainsworth
CREATE FUNCTION udfBusinessWeek (@Date as smalldatetime, @BeginOrEnd as char(1)) RETURNS smalldatetime AS /*This function will return the first or last day of the business week, using the framework of Monday - Sunday */ BEGIN DECLARE @Output smalldatetime IF @BeginOrEnd = 'B' BEGIN SET @Output = CASE WHEN DATEPART(dw, @DATE) = 1 THEN DATEADD(d, -6, @DATE) ELSE DATEADD(d, -DATEPART(dw, @DATE)+2, @DATE)END END ELSE IF @BeginOrEnd = 'E' BEGIN SET @Output = CASE WHEN DATEPART(dw, @DATE) = 1 THEN @DATE ELSE DATEADD(d, -DATEPART(dw, @DATE)+8, @DATE)END END RETURN(CONVERT(smalldatetime, CAST(@Output as char(11)))) END GO
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