WebCardinality Estimation (SQL Server) Versions of the CE Use Query Store to assess the CE version Use extended events to assess the CE version Steps to assess the CE version How to activate the best query plan Database compatibility level Legacy cardinality estimator Modify query to use hint Set a Query Store hint How to force a particular query plan … WebSQL Server 2014 introduced a brand new cardinality estimator. Unfortunately, the old cardinality estimator is still present. Queries will use the legacy cardinality estimator …
A Guide On Forcing The Legacy CE - SQL Server Musings …
WebJun 23, 2024 · Either rewrite the query or use hint for forcing legacy cardinality estimation: OPTION (USE HINT ('FORCE_LEGACY_CARDINALITY_ESTIMATION')); Share Improve this answer Follow answered Jun 23, 2024 at 7:31 j.v. 937 6 15 Add a comment Your Answer By clicking “Post Your Answer”, you agree to our terms of service, privacy policy … WebApr 13, 2024 · The default value of the Legacy Cardinality Estimation is OFF. Thus if you want to use the older version, you have to switch it to ON. Alternatively, you can change this property in T-SQL. ALTER DATABASE SCOPED CONFIGURATION SET LEGACY_CARDINALITY_ESTIMATION = OFF ON; However, if you enable this setting, … swiss re extool
Developers Choice: USE HINT query hints - Microsoft Community …
WebJan 15, 2024 · Cardinality estimates are predictions of final row count and row counts of intermediate results (such as joins, filtering and aggregation). These estimates have direct impact on plan choices such as join order, join type etc. Prior to SQL Server 2014, cardinality estimator was largely based on SQL Server 7.0 code base. WebJan 26, 2024 · The hints was : OPTION (USE HINT ( ‘FORCE_LEGACY_CARDINALITY_ESTIMATION’ )) by including this hint at the end of … WebJan 26, 2024 · The hints was : OPTION (USE HINT ( ‘FORCE_LEGACY_CARDINALITY_ESTIMATION’ )) by including this hint at the end of the SELECT statement. Then, I re-tested this stored procedure in SQL Server 2024. Amazingly, the execution time only tool 34 seconds. Share this: Twitter Facebook Loading... Related swiss re fellowship interview question