GROUP BY in SQL Server - Examples & AI Generator

Mastering the GROUP BY clause in SQL Server can be challenging, especially when switching between different databases and memorizing subtle syntax changes. For SQL developers, analysts, and database engineers, writing correct GROUP BY queries from scratch is time-consuming. AI2sql removes the guesswork by instantly generating optimized, production-ready SQL—no manual coding or syntax memorization required.

GROUP BY Syntax in SQL Server

Standard GROUP BY Structure

SELECT column1, aggregate_function(column2)
FROM table_name
GROUP BY column1;

• SELECT: Columns you want to retrieve.

• aggregate_function: e.g., COUNT, SUM, AVG.

• GROUP BY: Column(s) to group result sets by.

SQL Server’s GROUP BY follows ANSI SQL but has specifics, such as grouping by computed columns or using WITH ROLLUP.

GROUP BY Examples You Can Generate Instantly

1. Total Sales by Product

SELECT ProductID, SUM(Amount) AS TotalSales
FROM Orders
GROUP BY ProductID;

Finds total sales for each product from the Orders table.

2. Count of Customers per Country

SELECT Country, COUNT(CustomerID) AS NumberOfCustomers
FROM Customers
GROUP BY Country;

Counts customers in each country from the Customers table.

3. Average Order Value by Salesperson

SELECT SalespersonID, AVG(OrderValue) AS AvgOrderValue
FROM Sales
GROUP BY SalespersonID;

Calculates the average order value managed by each salesperson.

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FAQ

• Does GROUP BY work with multiple columns in SQL Server?
  Yes, separate columns with commas in the GROUP BY clause: GROUP BY column1, column2.

• What aggregate functions can I use?
  COUNT, SUM, AVG, MIN, MAX, and more standard functions.

• Is there a way to get subtotals in SQL Server?
  Yes, use GROUP BY ... WITH ROLLUP for hierarchical summaries.

Conclusion

Writing GROUP BY queries in SQL Server doesn’t have to be a time sink. With AI2sql, you can move beyond syntax struggles with instant GROUP BY SQL Server examples, saving time and avoiding errors. Join 50,000+ professionals already using AI2sql worldwide for faster analytics and insights. Generate Your First Query Now—no coding required.