if numField != len(columnTypes) {
		t.Fatalf("column's number not match struct and ddl, %d != %d", numField, len(columnTypes))
	}
	namer := schema.NamingStrategy{}
	for i := 0; i < numField; i++ {
		expectName := namer.ColumnName("", typ.Field(i).Name)
		if columnTypes[i].Name() != expectName {
			t.Fatalf("column order not match struct and ddl, idx %d: %s != %s",
				i, columnTypes[i].Name(), expectName)
		}
	}

		results = append(results, sub...)
		lastBatch = batch
		return nil
	}); result.Error != nil || result.RowsAffected != 5 {
		t.Errorf("Failed to batch find, got error %v, rows affected: %v", result.Error, result.RowsAffected)
	}
	if lastBatch != 3 {
		t.Fatalf("incorrect last batch, expected: %v, got: %v", 3, lastBatch)
	}