Nettet31. mar. 2024 · 4. You can use the SQL Server OPTIMIZE FOR query hint to coerce cardinality estimation based on hinted values instead of using the actual value (parameters) or unknown value (variables) during compilation. See the Query Hints topic in the SQL Server documentation for full details. Nettet23. mar. 2024 · 'FORCE_LEGACY_CARDINALITY_ESTIMATION' Forces the Query Optimizer to use Cardinality Estimation model of SQL Server 2012 (11.x) and earlier …
Decreased query performance after upgrade from SQL …
Nettet14. okt. 2024 · It is always referenced in the WHERE clause. Key2 is never mentioned in the WHERE clause. Each join is many-to-many. The problem is with cardinality estimation. The output estimation of each join gets smaller instead of larger. This results in final estimates of low hundreds when the actual result is well into the millions. Nettet26. jan. 2024 · I did some researches and found a hint that could improve the execute time in this particular stored procedure. 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. sun gods in history
OPTION (USE HINT ( ‘FORCE_LEGACY_CARDINALITY_ESTIMATION’ ))
Nettet28. feb. 2024 · OPTION (USE HINT('FORCE_LEGACY_CARDINALITY_ESTIMATION')) in SSMS, it works. When we try to alter the view with the option clause, it errors with . Incorrect syntax near the keyword 'OPTION' and. USE database statement is not allowed in a procedure, function or trigger. NettetThis hint does not override default or legacy cardinality estimation setting, if it is forced through database scoped configuration, trace flag or query hint. If legacy cardinality estimation is forced through DB scoped config, trace flag or query hint, the query will continue to use legacy cardinality estimation as directed. Nettet10. feb. 2024 · It provides a method to add behaviour to a single query, and behaviour which was previously only available as trace flags or database scoped configuration … sun gods in the bible