Issues

• JSON complex collection with a property mapped to "key" breaks element ordering: OPENJSON index column resolved to the property

  customer-reported
  dotnet/efcore#39438 · Filter by author vbornand opened on Oct 28, 2026

• Cannot scaffold migration with index on JSON complex property: RelationalJsonIndex literal not supported

  customer-reported
  dotnet/efcore#39430 · Filter by author marcominerva opened on Oct 27, 2026

• Query precompiler aliases Skip and Take into a single SQL parameter

  dotnet/efcore#39429 · Filter by author rockyway opened on Oct 27, 2026
  1

• Query precompiler folds conditionals on captured variables using fake defaults and drops a SQL branch

  dotnet/efcore#39428 · Filter by author rockyway opened on Oct 27, 2026

• NativeAOT: precompiled queries over enum or collection parameters throw NativeAotNoCompiledModel

  dotnet/efcore#39427 · Filter by author rockyway opened on Oct 27, 2026

• Precompiled ExecuteUpdate reads multi-setter values in reverse order, writing them to the wrong columns

  dotnet/efcore#39426 · Filter by author rockyway opened on Oct 27, 2026

• EF Core 10 materializes an owned entity with a null required property for a sibling derived entity

  customer-reported
  dotnet/efcore#39425 · Filter by author KyMback opened on Oct 27, 2026
  1

• Support separate navigation query and update mappings, including read-only navigations

  area-model-buildingarea-queryarea-save-changesneeds-design
  dotnet/efcore#39422 · Filter by author AndriySvyryd opened on Oct 26, 2026 · Backlog

• Support configuring a model-level filter on a navigation

  area-query
  Feature

  dotnet/efcore#39421 · Filter by author AndriySvyryd opened on Oct 26, 2026 · Backlog

• Reject member and method translations incompatible with the mapped store representation

  area-query
  Task

  dotnet/efcore#39420 · Filter by author AndriySvyryd opened on Oct 26, 2026 · 12.0.0

• Improve postprocessor extensibility

  area-queryneeds-design
  Feature

  dotnet/efcore#39419 · Filter by author AndriySvyryd opened on Oct 26, 2026 · Backlog

• Improve preprocessor extensibility

  area-queryneeds-design
  Feature

  dotnet/efcore#39418 · Filter by author AndriySvyryd opened on Oct 26, 2026 · Backlog

• Null compensation is repeated for a nullable subquery used as a value of an inline collection Contains

  area-querycustomer-reported
  Bug

  dotnet/efcore#39413 · Filter by author benedict-odonovan opened on Oct 26, 2026 · Backlog

• EF Core 10: after Update throws an identity conflict, the conflicting instance stays tracked as Detached and SaveChanges throws "Unexpected entry.EntityState: Detached

  customer-reported
  dotnet/efcore#39412 · Filter by author jojoman2 opened on Oct 26, 2026

• [dnceng-bot] Branch efcore/release/9.0 can't be merged to Azdo internal branch

  dotnet/efcore#39411 · Filter by author dotnet-mirroring opened on Oct 26, 2026

• Global UseCollation() convention generates uncompilable model snapshot for JSON-mapped ComplexCollection properties

  customer-reported
  dotnet/efcore#39406 · Filter by author alienwareone opened on Oct 25, 2026
  1

• Any method named Compare is translated as the natural comparison of its arguments, so a comparer's own ordering is silently ignored (StringComparer.OrdinalIgnoreCase, custom IComparer<T>)

  dotnet/efcore#39402 · Filter by author CaffeinatedCoder opened on Oct 24, 2026

• Non-auto-loaded properties are not populated on entities even when explicitly selected by FromSql or LINQ projection

  dotnet/efcore#39398 · Filter by author roji opened on Oct 24, 2026

• dotnet ef migrations script --idempotent can generate invalid PostgreSQL SQL

  dotnet/efcore#39396 · Filter by author cdbrown2018 opened on Oct 23, 2026

• Query never returns (infinite loop on the client) when grouping by a value-converted reference type and projecting the group's elements

  area-querycustomer-reported
  Bug

  dotnet/efcore#39366 · Filter by author benedict-odonovan opened on Oct 22, 2026 · 12.0-preview1

• Allow providers to customize aggregate lowering of grouped Any/All

  area-query
  Feature

  dotnet/efcore#39363 · Filter by author roji opened on Oct 22, 2026 · Backlog
  1

• Query: The LINQ expression 'p' could not be translated when Any predicate compares parameter with expression referencing parameter (e.g. p => p == p.ToUpper())

  area-primitive-collectionsarea-querycustomer-reported
  Bug

  dotnet/efcore#39351 · Filter by author bkoelman opened on Oct 21, 2026 · 12.0.0
  5

• Translate Enumerable.Concat over byte arrays

  Feature

  dotnet/efcore#39345 · Filter by author roji opened on Oct 20, 2026 · Backlog

• Migrator retains every pending migration's target model for the whole Migrate call

  area-migrationsarea-perf
  Bug

  dotnet/efcore#39339 · Filter by author melfahn opened on Oct 19, 2026 · Backlog

• SQL Server: quadratic parameter-name generation across split queries with MultipleParameters (10.0.13)

  area-perfarea-query
  dotnet/efcore#39333 · Filter by author CalculationCycle opened on Oct 19, 2026 · 12.0.0