Example and Notes
Use this SQL Server example as a starting point for development, troubleshooting, reporting, or maintenance work. Review it against your schema, data volume, permissions, and SQL Server version before using it in production.
The builtin VAR function Returns the statistical variance of all values in the specified expression. The code script below will show you how to use the VAR function. For more details on the VAR function
Select VAR(Client_Number)
From CLIENT
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WSI can adapt this script for your database, improve error handling, tune performance, document the logic, and help deploy it safely.