if len(tx.Statement.Selects) == 1 {
			dbName := tx.Statement.Selects[0]
			fields := strings.FieldsFunc(dbName, utils.IsValidDBNameChar)
			if len(fields) == 1 || (len(fields) == 3 && (strings.ToUpper(fields[1]) == "AS" || fields[1] == ".")) {
				if tx.Statement.Parse(tx.Statement.Model) == nil {
					if f := tx.Statement.Schema.LookUpField(dbName); f != nil {
						dbName = f.DBName
					}
				}

        // *no use DBFlute classification
        return null;
        //String searchName = classificationName;
        //if (classificationName.contains(".")) {
        //    final String dbName = Srl.substringFirstFront(classificationName, ".");
        //    if (dbName.equals(DBCurrent.getInstance().projectName())) {
        //        searchName = Srl.substringFirstRear(classificationName, ".");
        //    } else {
        //        return null;

				if ref.OwnPrimaryKey {
					primaryFields = append(primaryFields, ref.PrimaryKey)
					foreignKeys = append(foreignKeys, ref.ForeignKey.DBName)
					updateMap[ref.ForeignKey.DBName] = nil
				} else if ref.PrimaryValue != "" {
					tx.Where(clause.Eq{Column: ref.ForeignKey.DBName, Value: ref.PrimaryValue})
				}
			}

				t.Run(name, func(t *testing.T) {
					dbName := DB.NamingStrategy.ColumnName("", name)

					switch name {
					case "Name":
						if _, ok := first[dbName].(string); !ok {
							t.Errorf("invalid data type for %v, got %#v", dbName, first[dbName])
						}
					case "Age":
						if _, ok := first[dbName].(uint); !ok {
							t.Errorf("invalid data type for %v, got %#v", dbName, first[dbName])
						}
					case "Birthday":

				relForeignKeys = append(relForeignKeys, ref.ForeignKey.DBName)
				relForeignFields = append(relForeignFields, ref.ForeignKey)
				foreignFields = append(foreignFields, ref.PrimaryKey)
			} else if ref.PrimaryValue != "" {
				tx = tx.Where(clause.Eq{Column: ref.ForeignKey.DBName, Value: ref.PrimaryValue})
			} else {
				relForeignKeys = append(relForeignKeys, ref.PrimaryKey.DBName)

}

// ParseUniqueConstraints parse schema unique constraints
func (schema *Schema) ParseUniqueConstraints() map[string]UniqueConstraint {
	uniques := make(map[string]UniqueConstraint)
	for _, field := range schema.Fields {
		if field.Unique {
			name := schema.namer.UniqueName(schema.Table, field.DBName)
			uniques[name] = UniqueConstraint{Name: name, Field: field}
		}

				relForeignKeys = append(relForeignKeys, ref.ForeignKey.DBName)
			} else if ref.PrimaryValue != "" {
				conds = append(conds, clause.Eq{
					Column: clause.Column{Table: rel.JoinTable.Table, Name: ref.ForeignKey.DBName},
					Value:  ref.PrimaryValue,
				})
			} else {
				conds = append(conds, clause.Eq{
					Column: clause.Column{Table: rel.JoinTable.Table, Name: ref.ForeignKey.DBName},

		if err == nil {
			devName := ""
			diskstats, _ := bfs.ProcDiskstats()
			for _, dstat := range diskstats {
				// ignore all loop devices
				if strings.HasPrefix(dstat.DeviceName, "loop") {
					continue
				}
				if dstat.MajorNumber == info.Major && dstat.MinorNumber == info.Minor {
					devName = dstat.DeviceName
					break
				}
			}
			if devName != "" {
				info.Name = devName

						foreignFields = append(foreignFields, ref.PrimaryKey)
						relForeignKeys = append(relForeignKeys, ref.ForeignKey.DBName)
					} else if ref.PrimaryValue != "" {
						queryConds = append(queryConds, clause.Eq{
							Column: clause.Column{Table: rel.JoinTable.Table, Name: ref.ForeignKey.DBName},
							Value:  ref.PrimaryValue,
						})
					}
				}

	if stmt.SQL.Len() == 0 && !stmt.Statement.Unscoped {
		curTime := stmt.DB.NowFunc()
		stmt.AddClause(clause.Set{{Column: clause.Column{Name: sd.Field.DBName}, Value: curTime}})
		stmt.SetColumn(sd.Field.DBName, curTime, true)

		if stmt.Schema != nil {
			_, queryValues := schema.GetIdentityFieldValuesMap(stmt.Context, stmt.ReflectValue, stmt.Schema.PrimaryFields)