CHECKSUM_AGG()

This function returns the checksum of the values in a group. `CHECKSUM_AGG` ignores null values. The OVER clause can follow `CHECKSUM_AGG`.

Signature

CHECKSUM_AGG ( [ ALL | DISTINCT ] expression )

Parameters

  • expression — An integer expression. `CHECKSUM_AGG` does not allow use of aggregate functions or subqueries.

Examples

SELECT CHECKSUM_AGG(quantity) FROM dbo.orders;

-----------
         12

Run against SQL Server 16.0.4265.3 on 2026-09-13. This is the output we got, not the documentation’s.

Available on

  • SQL Server 2017 and later
  • Azure SQL Database
  • Azure SQL Managed Instance
  • Azure Synapse Analytics
  • Microsoft Fabric warehouse
  • Fabric SQL database

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Signature and description adapted from the Microsoft SQL documentation, used under the CC BY 4.0. SQL Server and Azure are trademarks of the Microsoft group of companies. This page is not affiliated with Microsoft.