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Jan 2, 2025
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Add link with more information on Contains perf #4917

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4 changes: 3 additions & 1 deletion entity-framework/core/what-is-new/ef-core-8.0/breaking-changes.md
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Expand Up @@ -151,7 +151,9 @@ WHERE [b].[Name] IN (
)
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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

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