results    []User
		totalBatch int
	)

	if result := DB.Table("users as u").Where("name = ?", users[0].Name).FindInBatches(&results, 2, func(tx *gorm.DB, batch int) error {
		totalBatch += batch

		if tx.RowsAffected != 2 {
			t.Errorf("Incorrect affected rows, expects: 2, got %v", tx.RowsAffected)
		}

		if len(results) != 2 {
			t.Errorf("Incorrect users length, expects: 2, got %v", len(results))
		}

	}

	var err error
	_ = DB.Migrator().DropTable(&RelationModel1{}, &RelationModel2{}, &RelationModel3{})

	tx := DB.Session(&gorm.Session{})
	tx.IgnoreRelationshipsWhenMigrating = true

	err = tx.AutoMigrate(&RelationModel3{})
	if err != nil {
		t.Errorf("AutoMigrate err:%v", err)
	}

	// RelationModel3 should be existed

            },
            {
              "datasource": {
                "type": "prometheus",
                "uid": "${datasource}"
              },
              "expr": "max(rate(envoy_cluster_upstream_cx_tx_bytes_total{cluster_name=\"xds-grpc\"}[1m]))",
              "format": "time_series",
              "intervalFactor": 1,
              "legendFormat": "XDS Request Bytes Max",
              "refId": "A"
            },