debug_workdays_functions

debug_check_workdays.sql

DECLARE @StartDate DATE = '2025-01-10';
DECLARE @CalendarDays INT = 25;
DECLARE @EndDate DATE = DATEADD(DAY, @CalendarDays , @StartDate);

WITH Dates AS (
    SELECT @StartDate AS WorkDate
    UNION ALL
    SELECT DATEADD(DAY, 1, WorkDate)
    FROM Dates
    WHERE WorkDate < @EndDate
)
SELECT COUNT(*) AS Workdays
FROM Dates
WHERE DATEPART(WEEKDAY, WorkDate) NOT IN (7, 1);  -- 1 = Sunday, 7 = Saturday (default SQL Server)
;

DECLARE @StartDate DATE = '2025-01-10';
DECLARE @CalendarDays INT = 25;
DECLARE @EndDate DATE = DATEADD(DAY, @CalendarDays - 1, @StartDate);

WITH Dates AS (
    SELECT DATEADD(DAY, -1, @StartDate) AS WorkDate
    UNION ALL
    SELECT DATEADD(DAY, 1, WorkDate)
    FROM Dates
    WHERE WorkDate < @EndDate
)
SELECT WorkDate, DATENAME(WEEKDAY, WorkDate) AS DayOfWeek,
       CASE 
           WHEN DATEPART(WEEKDAY, WorkDate) IN (7, 1) THEN 'Weekend' 
           ELSE 'Workday' 
       END AS DayType
FROM Dates
ORDER BY WorkDate;