SqlServer: resolve included properties of index to column names (in migrations)

src/EFCore.SqlServer/Migrations/Internal/SqlServerMigrationsAnnotationProvider.cs

@@ -89,9 +89,13 @@ public override IEnumerable<IAnnotation> For(IIndex index)
             var includeProperties = index.GetIncludeProperties();
             if (includeProperties != null)
             {
+                var includeColumns = (IReadOnlyList<string>)includeProperties
+                    .Select(p => index.DeclaringEntityType.FindProperty(p).GetColumnName())
+                    .ToArray();
+
                 yield return new Annotation(
                     SqlServerAnnotationNames.Include,
-                    includeProperties);
+                    includeColumns);
             }
 
             var isOnline = index.IsCreatedOnline();

src/EFCore.SqlServer/Migrations/SqlServerMigrationsSqlGenerator.cs

@@ -1455,15 +1455,15 @@ protected override void IndexTraits(MigrationOperation operation, IModel model,
         /// <param name="builder"> The command builder to use to add the SQL fragment. </param>
         protected override void IndexOptions(CreateIndexOperation operation, IModel model, MigrationCommandListBuilder builder)
         {
-            if (operation[SqlServerAnnotationNames.Include] is IReadOnlyList<string> includeProperties
-                && includeProperties.Count > 0)
+            if (operation[SqlServerAnnotationNames.Include] is IReadOnlyList<string> includeColumns
+                && includeColumns.Count > 0)
             {
                 builder.Append(" INCLUDE (");
-                for (var i = 0; i < includeProperties.Count; i++)
+                for (var i = 0; i < includeColumns.Count; i++)
                 {
-                    builder.Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(includeProperties[i]));
+                    builder.Append(Dependencies.SqlGenerationHelper.DelimitIdentifier(includeColumns[i]));
 
-                    if (i != includeProperties.Count - 1)
+                    if (i != includeColumns.Count - 1)
                     {
                         builder.Append(", ");
                     }

test/EFCore.SqlServer.Tests/Migrations/SqlServerMigrationsAnnotationProviderTest.cs

@@ -32,5 +32,22 @@ public void For_property_handles_identity_annotations()
             var identity = Assert.Single(migrationAnnotations, a => a.Name == SqlServerAnnotationNames.Identity);
             Assert.Equal("2, 3", identity.Value);
         }
+
+        [ConditionalFact]
+        public void Resolves_column_names_for_Index_with_included_properties()
+        {
+            _modelBuilder.Entity<Entity>().Property(e => e.IncludedProp).HasColumnName("IncludedColumn");
+            var index = _modelBuilder.Entity<Entity>().HasIndex(e => e.IndexedProp).IncludeProperties(e => e.IncludedProp).Metadata;
+            _modelBuilder.FinalizeModel();
+
+            Assert.Contains(_annotations.For(index), a => a.Name == SqlServerAnnotationNames.Include && ((string[])a.Value).Contains("IncludedColumn"));
+        }
+
+        private class Entity
+        {
+            public int Id { get; set; }
+            public string IndexedProp { get; set; }
+            public string IncludedProp { get; set; }
+        }
     }
 }