Sql server update statistics best practices

Applies to:SQL ServerAzure SQL DatabaseAzure SQL Managed InstanceAzure Synapse AnalyticsAnalytics Platform System (PDW)SQL database in Microsoft Fabric

You can update query optimization statistics on a table or indexed view in SQL Server by using SQL Server Management Studio or Transact-SQL.

By default, the query optimizer already updates statistics as necessary to improve the query plan; in some cases you can improve query performance by using or the stored procedure to update statistics more frequently than the default updates.

Updating statistics ensures that queries compile with up-to-date statistics.

However, updating statistics causes queries to recompile.

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We recommend not updating statistics too frequently, because there's a performance tradeoff between improving query plans and the time it takes to recompile queries. The specific tradeoffs depend on your application. can use to sort the sample of rows for building statistics.

Permissions

If using or making changes through SQL Server Management Studio, requires ALTER permission on the table or view.

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