Lokasi ngalangkungan proxy:   [ UP ]  
[Ngawartoskeun bug]   [Panyetelan cookie]                
Skip to content

Commit aaf0d05

Browse files
Update docs/relational-databases/performance/intelligent-query-processing-feedback.md
1 parent d705861 commit aaf0d05

1 file changed

Lines changed: 1 addition & 1 deletion

File tree

docs/relational-databases/performance/intelligent-query-processing-feedback.md

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -339,7 +339,7 @@ Currently in preview for [!INCLUDE[ssSDSfull](../../includes/sssdsfull-md.md)] a
339339

340340
Starting with [!INCLUDE[sql-server-2022](../../includes/sssql22-md.md)]), the Cardinality Estimation (CE) feedback is part of the [intelligent query processing family of features](intelligent-query-processing.md) and addresses suboptimal query execution plans for repeating queries when these issues result from incorrect CE model assumptions. This scenario helps with reducing regression risks related to the default CE when upgrading from older versions of the Database Engine.
341341

342-
Because no single set of CE models and assumptions can accommodate the vast array of customer workloads and data distributions, CE feedback provides an adaptable solution based on query runtime characteristics. CE feedback will identify and use a model assumption that better fits a given query and data distribution to improve query execution plan quality. Currently, CE Feedback can identify plan operators where the esimated number or rows and actual number of rows are very different. Feedback is applied when significant model estimation errors occur and we have a viable alternate model to try.
342+
Because no single set of CE models and assumptions can accommodate the vast array of customer workloads and data distributions, CE feedback provides an adaptable solution based on query runtime characteristics. CE feedback will identify and use a model assumption that better fits a given query and data distribution to improve query execution plan quality. Currently, CE Feedback can identify plan operators where the estimated number of rows and the actual number of rows are very different. Feedback is applied when significant model estimation errors occur, and there is a viable alternate model to try.
343343

344344
- Starting with [!INCLUDE [sssql22-md](../../includes/sssql22-md.md)], when Query Store for secondary replicas is enabled, CE feedback is not replica-aware for secondary replicas in availability groups. CE feedback currently only benefits primary replicas. For more information, see [Query Store for secondary replicas](query-store-for-secondary-replicas.md).
345345

0 commit comments

Comments
 (0)