changed := func(field *schema.Field) bool {
		fieldValue, _ := field.ValueOf(stmt.Context, modelValue)
		if v, ok := selectColumns[field.DBName]; (ok && v) || (!ok && !restricted) {
			if mv, mok := stmt.Dest.(map[string]interface{}); mok {
				if fv, ok := mv[field.Name]; ok {
					return !utils.AssertEqual(fv, fieldValue)
				} else if fv, ok := mv[field.DBName]; ok {
					return !utils.AssertEqual(fv, fieldValue)
				}