if field.IgnoreMigration {
		return nil
	}

	// found, smart migrate
	fullDataType := strings.TrimSpace(strings.ToLower(m.DB.Migrator().FullDataTypeOf(field).SQL))
	realDataType := strings.ToLower(columnType.DatabaseTypeName())

	var (
		alterColumn bool
		isSameType  = fullDataType == realDataType
	)

	if !field.PrimaryKey {
		// check type

	}

	if field.GORMDataType == "" {
		field.GORMDataType = field.DataType
	}

	if val, ok := field.TagSettings["TYPE"]; ok {
		switch DataType(strings.ToLower(val)) {
		case Bool, Int, Uint, Float, String, Time, Bytes:
			field.DataType = DataType(strings.ToLower(val))
		default:
			field.DataType = DataType(val)
		}
	}

	if field.Size == 0 {
		switch reflect.Indirect(fieldValue).Kind() {

	conds = append(conds, clause.IN{Column: column, Values: values})
	return
}

func copyableDataType(str DataType) bool {
	for _, s := range []string{"auto_increment", "primary key"} {
		if strings.Contains(strings.ToLower(string(str)), s) {
			return false
		}
	}
	return true