t.Errorf("failed to create:%v", err)
	}

	err = DB.Create(&q2).Error
	if err != nil {
		t.Errorf("failed to create:%v", err)
	}

	var qs []QueryResetNullValue
	err = DB.Joins("Item1").Joins("Item2").Find(&qs).Error
	if err != nil {
		t.Errorf("failed to find:%v", err)
	}

	if len(qs) != 2 {
		t.Fatalf("find count not equal:%d", len(qs))
	}

	AssertEqual(t, q1, qs[0])

	_, err = findColumnType(&RelationModel2{}, "id")
	if err == nil {
		t.Errorf("RelationModel2 should not be migrated")
	}
}

func TestMigrateView(t *testing.T) {
	DB.Save(GetUser("joins-args-db", Config{Pets: 2}))

	if err := DB.Migrator().CreateView("invalid_users_pets",
		gorm.ViewOption{Query: nil}); err != gorm.ErrSubQueryRequired {
		t.Fatalf("no view should be created, got %v", err)
	}

          "interval": "1m",
          "legendFormat": "{{server}}",
          "refId": "A"
        }
      ],
      "title": "Backlog (last 5 mins)",
      "type": "timeseries"
    },
    {
      "datasource": {
        "type": "prometheus",
        "uid": "${DS_PROMETHEUS}"
      },
      "fieldConfig": {
        "defaults": {