STRING AGG in SQL Server - Examples & AI Generator

Learning the STRING AGG function in SQL Server can be tricky for developers and analysts, especially if you’re switching from other SQL databases where the syntax can differ significantly. Instead of memorizing multiple SQL Server-specific syntaxes, AI2sql helps you generate production-ready STRING AGG queries in just seconds—no coding required. Whether you’re processing customer info, merging product lists, or building reports, swift query generation saves you both time and effort.

STRING AGG Syntax in SQL Server

Basic Syntax

The STRING_AGG function concatenates string values from multiple rows into a single string, separated by a specified delimiter.

STRING_AGG ( expression, separator )
    [WITHIN GROUP (ORDER BY order_expression)]

• expression: The column to concatenate

• separator: Character(s) to use between values

• WITHIN GROUP (ORDER BY ...): Optional; specify ordering for concatenation

STRING AGG Examples You Can Generate Instantly

1. List Product Names per Category

SELECT CategoryID, STRING_AGG(ProductName, ', ') AS ProductList
FROM Products
GROUP BY CategoryID;

Business use: Quickly produce a comma-separated list of product names for each category.

2. Combine Customer Emails by Country

SELECT Country, STRING_AGG(Email, '; ') AS Emails
FROM Customers
GROUP BY Country;

Business use: Gather all customer emails per country into one field for targeted campaigns.

3. Orders Summary: List Order IDs per Customer (Ordered)

SELECT CustomerID, STRING_AGG(CAST(OrderID AS VARCHAR), '-')
       WITHIN GROUP (ORDER BY OrderDate DESC) AS RecentOrders
FROM Orders
GROUP BY CustomerID;

Business use: Summarize each customer’s orders in most recent order for reporting.

Generate STRING AGG queries in 10 seconds with AI2sql

Why Use AI2sql Instead of Manual STRING AGG Coding

• Speed: Create complex STRING AGG queries in 10 seconds.

• No Coding Required: Enter your use-case in plain language—get SQL instantly.

• Consistency: Avoid syntax errors moving between databases.

• Trusted Worldwide: 50,000+ users across 80+ countries rely on AI2sql.

Forget memorizing SQL Server STRING AGG syntax. Instantly create optimized, business-ready SQL code—just describe what you need.

FAQ: STRING AGG in SQL Server

• Can I specify order in STRING AGG results?
  Yes, use WITHIN GROUP (ORDER BY ...) to order concatenated values.

• Is STRING AGG available in all SQL Server versions?
  It's available from SQL Server 2017 onward.

• What’s the default separator?
  You must specify a separator; otherwise, SQL Server returns an error.

Ready to save time? Try AI2sql Generator or Learn STRING AGG for more tips.

Conclusion

No need to struggle with repetitive STRING AGG coding or memorizing SQL Server-specific syntax. With AI2sql, you generate accurate, optimized SQL queries from natural-language prompts in seconds—making integration seamless for your next project. Generate your first query now and join 50,000+ users accelerating SQL workflows worldwide!