In this comprehensive article, I’ll share multiple methods to identify, filter, and work with weekend dates in SQL Server. These techniques have helped me solve complex reporting challenges for clients, ensuring accurate business intelligence and operational reporting.
How to Get Weekend Date in SQL Server
SQL Server Date Functions Overview
Before diving into weekend detection methods, it’s essential to understand SQL Server’s date handling capabilities. The key function for weekend detection is DATEPART() and DATENAME(), which allow us to extract day-of-week information from datetime values.
Day-of-Week Numbering in SQL Server
SQL Server represents days of the week numerically, but the exact values depend on your @@DATEFIRST setting:
| Day | Default (Sunday=1) | Monday First (@@DATEFIRST=1) |
|---|---|---|
| Sunday | 1 | 7 |
| Monday | 2 | 1 |
| Tuesday | 3 | 2 |
| Wednesday | 4 | 3 |
| Thursday | 5 | 4 |
| Friday | 6 | 5 |
| Saturday | 7 | 6 |
Understanding this variation is crucial because different organizations may have different DATEFIRST where their international operations required consistent weekend logic across different regional settings.
Method 1: Using the DATEPART Function for Weekend Detection
Basic Weekend Identification Query
The most straightforward method to identify weekend dates uses the DATEPART() function with the WEEKDAY parameter.
-- Method 1: Basic weekend detection using DATEPART
-- This query identifies weekend dates regardless of DATEFIRST setting
SELECT
Order_Date,
Order_name,
Order_ID,
DATENAME(WEEKDAY, Order_Date) AS DayName,
DATEPART(WEEKDAY, Order_Date) AS DayNumber,
CASE
WHEN DATEPART(WEEKDAY, Order_Date) IN (1, 7) AND @@DATEFIRST = 7 THEN 'Weekend'
WHEN DATEPART(WEEKDAY, Order_Date) IN (6, 7) AND @@DATEFIRST = 1 THEN 'Weekend'
WHEN DATEPART(WEEKDAY, Order_Date) IN (1, 2) AND @@DATEFIRST = 6 THEN 'Weekend'
ELSE 'Weekday'
END AS DateType
FROM OrdersNew
WHERE Order_Date >= '2025-01-01'
AND Order_Date < '2025-07-01'
ORDER BY Order_Date;After executing the above query, I got the expected output as shown in the screenshot below.

Universal Weekend Detection Function
To handle different DATEFIRST settings universally. Below is a reliable custom function for one of the requirements.
-- Universal weekend detection that works with any DATEFIRST setting
-- This approach uses DATENAME which is independent of DATEFIRST
SELECT
TransactionDate,
CustomerID,
Amount,
DATENAME(WEEKDAY, TransactionDate) AS DayName,
CASE
WHEN DATENAME(WEEKDAY, TransactionDate) IN ('Saturday', 'Sunday')
THEN 'Weekend'
ELSE 'Weekday'
END AS DateType,
CASE
WHEN DATENAME(WEEKDAY, TransactionDate) IN ('Saturday', 'Sunday')
THEN 1
ELSE 0
END AS IsWeekend
FROM Transactions
WHERE TransactionDate >= DATEADD(MONTH, -1, GETDATE())
ORDER BY TransactionDate DESC;After executing the above query, I got the expected output as shown in the screenshot below.

Method 2: Filtering Weekend Records from Query Results
Excluding Weekend Data
Many business scenarios require excluding weekend data from analysis. Here’s how I typically handle this requirement:
-- Method 2A: Exclude weekend records from business analysis
-- Useful for weekday-only business metrics
DECLARE @StartDate DATE = '2024-01-01'
DECLARE @EndDate DATE = '2024-12-31'
SELECT
ProductCategory,
COUNT(*) AS WeekdayOrders,
SUM(OrderAmount) AS WeekdayRevenue,
AVG(OrderAmount) AS AvgWeekdayOrderValue,
MIN(OrderDate) AS FirstWeekdayOrder,
MAX(OrderDate) AS LastWeekdayOrder
FROM SalesData
WHERE OrderDate >= @StartDate
AND OrderDate <= @EndDate
AND DATENAME(WEEKDAY, OrderDate) NOT IN ('Saturday', 'Sunday')
GROUP BY ProductCategory
HAVING COUNT(*) >= 10 -- Minimum threshold for statistical significance
ORDER BY WeekdayRevenue DESC;
Including Only Weekend Data
For weekend-specific analysis:
-- Method 2B: Include only weekend records
-- Perfect for weekend promotion analysis
WITH WeekendSales AS (
SELECT
DATEPART(YEAR, SaleDate) AS SaleYear,
DATEPART(MONTH, SaleDate) AS SaleMonth,
SaleDate,
CustomerID,
ProductID,
SaleAmount,
DATENAME(WEEKDAY, SaleDate) AS WeekendDay
FROM Sales
WHERE DATENAME(WEEKDAY, SaleDate) IN ('Saturday', 'Sunday')
AND SaleDate >= '2024-01-01'
),
MonthlyWeekendTotals AS (
SELECT
SaleYear,
SaleMonth,
COUNT(DISTINCT CustomerID) AS UniqueWeekendCustomers,
COUNT(*) AS WeekendTransactions,
SUM(SaleAmount) AS TotalWeekendRevenue,
AVG(SaleAmount) AS AvgWeekendTransaction
FROM WeekendSales
GROUP BY SaleYear, SaleMonth
)
SELECT
SaleYear,
SaleMonth,
DATENAME(MONTH, DATEFROMPARTS(SaleYear, SaleMonth, 1)) AS MonthName,
UniqueWeekendCustomers,
WeekendTransactions,
FORMAT(TotalWeekendRevenue, 'C', 'en-US') AS FormattedRevenue,
FORMAT(AvgWeekendTransaction, 'C', 'en-US') AS FormattedAvgTransaction
FROM MonthlyWeekendTotals
ORDER BY SaleYear, SaleMonth;Method 3: Creating Reusable Weekend Functions
Comprehensive Weekend Utility Functions
For consistent weekend handling across applications, I recommend creating these utility functions:
-- Method 6: Create reusable weekend utility functions
-- Standard functions for weekend operations
-- Function 1: Check if date is weekend
CREATE FUNCTION dbo.IsWeekend(@Date DATE)
RETURNS BIT
AS
BEGIN
RETURN CASE
WHEN DATENAME(WEEKDAY, @Date) IN ('Saturday', 'Sunday')
THEN 1
ELSE 0
END
END;
-- Function 2: Get weekend type
CREATE FUNCTION dbo.GetWeekendType(@Date DATE)
RETURNS VARCHAR(20)
AS
BEGIN
RETURN CASE
WHEN DATENAME(WEEKDAY, @Date) = 'Saturday' THEN 'Saturday'
WHEN DATENAME(WEEKDAY, @Date) = 'Sunday' THEN 'Sunday'
ELSE 'Weekday'
END
END;
-- Function 3: Get next weekend start (Saturday)
CREATE FUNCTION dbo.GetNextWeekendStart(@Date DATE)
RETURNS DATE
AS
BEGIN
DECLARE @DayOfWeek INT = DATEPART(WEEKDAY, @Date)
DECLARE @DaysToAdd INT
SET @DaysToAdd = CASE
WHEN @DayOfWeek = 7 THEN 0 -- Already Saturday
WHEN @DayOfWeek = 1 THEN 6 -- Sunday, add 6 days
ELSE 7 - @DayOfWeek + 1 -- Other days
END
RETURN DATEADD(DAY, @DaysToAdd, @Date)
END;
-- Function 4: Count weekend days in date range
CREATE FUNCTION dbo.CountWeekendDays(@StartDate DATE, @EndDate DATE)
RETURNS INT
AS
BEGIN
DECLARE @WeekendCount INT = 0
DECLARE @CurrentDate DATE = @StartDate
WHILE @CurrentDate <= @EndDate
BEGIN
IF dbo.IsWeekend(@CurrentDate) = 1
SET @WeekendCount = @WeekendCount + 1
SET @CurrentDate = DATEADD(DAY, 1, @CurrentDate)
END
RETURN @WeekendCount
END;After executing the above queries, I got the expected output as shown in the screenshots below.




Conclusion and Best Practices
After implementing weekend date handling solutions for many clients, I’ve learned that successful weekend date management in SQL Server requires a combination of technical expertise and business understanding.
Key Takeaways
• Use DATENAME() for universal compatibility: This approach works regardless of @@DATEFIRST settings, making your code more portable across different SQL Server environments.
• Create reusable utility functions: Standardizing weekend logic through custom functions ensures consistency across your applications and reduces maintenance overhead.
• Consider business context: Weekend handling requirements vary significantly between industries—retail companies may include weekend sales in regular analysis, while financial institutions often exclude them from business day calculations.
• Optimize for performance: Large-scale weekend analysis requires proper indexing strategies and query optimization, especially when dealing with historical data spanning multiple years.
• Plan for edge cases: Handle NULL dates, time zones, and international date formats appropriately to avoid unexpected results in production environments.
Recommended Implementation Strategy:
- Start with the
DATENAME()approach for basic weekend detection - Create utility functions for complex weekend calculations
- Implement proper indexing on date columns
- Test thoroughly with your organization’s specific
DATEFIRSTsettings
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