Do not use Arel.star when ignored_columns

If there are any ignored columns, we will now list out all columns we
want to be returned from the database.

Includes a regression test.

activerecord/lib/active_record/relation/query_methods.rb

@@ -1035,6 +1035,8 @@ def convert_join_strings_to_ast(table, joins)
       def build_select(arel)
         if select_values.any?
           arel.project(*arel_columns(select_values.uniq))
+        elsif @klass.ignored_columns.any?
+          arel.project(*arel_columns(@klass.column_names))
         else
           arel.project(table[Arel.star])
         end

activerecord/test/cases/base_test.rb

@@ -1476,4 +1476,25 @@ def test_default_values_are_deeply_dupped
     assert_equal(%w(first_name last_name), Developer.ignored_columns)
     assert_equal(%w(first_name last_name), SymbolIgnoredDeveloper.ignored_columns)
   end
+
+  test "when #reload called, ignored columns' attribute methods are not defined" do
+    developer = Developer.create!(name: "Developer")
+    refute developer.respond_to?(:first_name)
+    refute developer.respond_to?(:first_name=)
+
+    developer.reload
+
+    refute developer.respond_to?(:first_name)
+    refute developer.respond_to?(:first_name=)
+  end
+
+  test "ignored columns not included in SELECT" do
+    query = Developer.all.to_sql
+
+    # ignored column
+    refute query.include?("first_name")
+
+    # regular column
+    assert query.include?("name")
+  end
 end