Add link with more information on Contains perf (#4917)

roji · web-flow · commit c6d62270da6e · 2025-01-02T13:44:44.000-08:00
Addresses dotnet/efcore#32394 (comment)
diff --git a/entity-framework/core/what-is-new/ef-core-8.0/breaking-changes.md b/entity-framework/core/what-is-new/ef-core-8.0/breaking-changes.md
@@ -151,7 +151,9 @@ WHERE [b].[Name] IN (
 )
 ```
 
-However, after the release of EF 8 it turned out that while the new SQL is more efficient for most cases, it can be dramatically less efficient in a minority of cases, even causing query timeouts in some cases
+However, after the release of EF 8 it turned out that while the new SQL is more efficient for most cases, it can be dramatically less efficient in a minority of cases, even causing query timeouts in some cases.
+
+Please see [this comment](https://github.com/dotnet/efcore/issues/32394#issuecomment-2266634632) for a summary of the change in EF 8, the partial mitigations provided in EF 9, and the plan going forward for EF 10.
 
 #### Mitigations
 

Original file line number	Diff line number	Diff line change
`@@ -151,7 +151,9 @@ WHERE [b].[Name] IN (`
`151`	`151`	`)`
`152`	`152`	```
`153`	`153`
`154`		`-However, after the release of EF 8 it turned out that while the new SQL is more efficient for most cases, it can be dramatically less efficient in a minority of cases, even causing query timeouts in some cases`
	`154`	`+However, after the release of EF 8 it turned out that while the new SQL is more efficient for most cases, it can be dramatically less efficient in a minority of cases, even causing query timeouts in some cases.`
	`155`	`+`
	`156`	`+Please see [this comment](https://github.com/dotnet/efcore/issues/32394#issuecomment-2266634632) for a summary of the change in EF 8, the partial mitigations provided in EF 9, and the plan going forward for EF 10.`
`155`	`157`
`156`	`158`	`#### Mitigations`
`157`	`159`