func (d testDialector) Migrator(db *gorm.DB) gorm.Migrator             { return nil }
func (d testDialector) DataTypeOf(*schema.Field) string                { return "" }
func (d testDialector) DefaultValueOf(*schema.Field) clause.Expression { return clause.Expr{} }
func (d testDialector) BindVarTo(writer clause.Writer, stmt *gorm.Statement, v interface{}) {
	// write a simple placeholder
	writer.WriteByte('?')
}

					values.Columns = append(values.Columns, clause.Column{Name: field.DBName})
					for idx := range values.Values {
						if vs[idx] == nil {
							values.Values[idx] = append(values.Values[idx], stmt.DefaultValueOf(field))
						} else {
							values.Values[idx] = append(values.Values[idx], vs[idx])
						}
					}
				}
			}
		case reflect.Struct: