This PR addresses a critical issue where Entity Framework Core generates SQL commands in the wrong order when replacing an owned entity that has foreign key relationships to other entities, causing FK constraint violations.

Problem

When an owned entity (likeFile) references another entity (likeContent) through a foreign key, and the owned entity is replaced duringSaveChanges(), EF Core was generating commands in this incorrect order:

DELETEFROM [Contents]WHERE [Id]= @p0;-- ❌ Deletes referenced entity firstINSERT INTO [Contents] ([Id], [Data])VALUES (@p1, @p2);UPDATE [Documents]SET [File_ContentId]= @p3WHERE [Id]= @p6;

This causes a foreign key constraint violation because theUPDATE command tries to referenceContent(Id=2) before it's inserted, and theDELETE command tries to removeContent(Id=1) while it's still being referenced.

Solution

The fix modifies theCanCreateDependency method inCommandBatchPreparer to properly handle foreign key dependencies for owned entities. Previously, the dependency tracking logic was excluding owned entity FK relationships under the assumption they were "handled elsewhere," but this was incorrect for owned entities that reference non-owned entities.

The corrected command order is:

INSERT INTO [Contents] ([Id], [Data])VALUES (@p1, @p2);-- ✅ Insert new content firstUPDATE [Documents]SET [File_ContentId]= @p3WHERE [Id]= @p6;DELETEFROM [Contents]WHERE [Id]= @p0;-- ✅ Delete old content last

Changes Made

• EnhancedCanCreateDependency to identify owned entities that have FK relationships to non-owned entities
• Allow dependency creation for these relationships even when FK constraints exist at the table level
• Added comprehensive test caseBatchCommands_sorts_FK_dependencies_correctly_when_replacing_owned_entity to verify the fix

Test Case

The fix handles scenarios like:

// Document owns File, File references Contentdocument.File=newFile{ContentId=2,Content=newContent};// Replace owned entitycontext.Remove(oldContent);// Remove old referenced entitycontext.SaveChanges();// Now generates correct SQL order

Addressing#36059.

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