type Config struct {
	CreateIndexAfterCreateTable bool
	DB                          *gorm.DB
	gorm.Dialector
}

type printSQLLogger struct {
	logger.Interface
}

func (l *printSQLLogger) Trace(ctx context.Context, begin time.Time, fc func() (sql string, rowsAffected int64), err error) {
	sql, _ := fc()
	fmt.Println(sql + ";")
	l.Interface.Trace(ctx, begin, fc, err)
}

// GormDataTypeInterface gorm data type interface

						if _, isZero := pkField.ValueOf(db.Statement.Context, rv); isZero {
							db.AddError(pkField.Set(db.Statement.Context, rv, insertID))
							insertID += pkField.AutoIncrementIncrement
						}
					}
				}
			case reflect.Struct:
				_, isZero := pkField.ValueOf(db.Statement.Context, db.Statement.ReflectValue)
				if isZero {
					db.AddError(pkField.Set(db.Statement.Context, db.Statement.ReflectValue, insertID))
				}
			}

	Schema                 *Schema
	EmbeddedSchema         *Schema
	OwnerSchema            *Schema
	ReflectValueOf         func(context.Context, reflect.Value) reflect.Value
	ValueOf                func(context.Context, reflect.Value) (value interface{}, zero bool)
	Set                    func(context.Context, reflect.Value, interface{}) error
	Serializer             SerializerInterface
	NewValuePool           FieldNewValuePool

			} else {
				constraint.Schema = rel.Schema
				constraint.ReferenceSchema = ref.PrimaryKey.Schema
			}
		}
	}

	return &constraint
}

func (rel *Relationship) ToQueryConditions(ctx context.Context, reflectValue reflect.Value) (conds []clause.Expression) {
	table := rel.FieldSchema.Table
	foreignFields := []*Field{}
	relForeignKeys := []string{}

	if rel.JoinTable != nil {
		table = rel.JoinTable.Table

			case reflect.Struct:
				tx.AddError(rel.Field.Set(tx.Statement.Context, data, elem.Interface()))
			case reflect.Slice, reflect.Array:
				if reflectFieldValue.Type().Elem().Kind() == reflect.Ptr {
					tx.AddError(rel.Field.Set(tx.Statement.Context, data, reflect.Append(reflectFieldValue, elem).Interface()))
				} else {
					tx.AddError(rel.Field.Set(tx.Statement.Context, data, reflect.Append(reflectFieldValue, elem.Elem()).Interface()))
				}

				},
			},
		},
	}

	DB.Create(&users)

	query := make([]string, 0)
	sess := DB.Session(&gorm.Session{Logger: Tracer{
		Logger: DB.Config.Logger,
		Test: func(ctx context.Context, begin time.Time, fc func() (sql string, rowsAffected int64), err error) {
			sql, _ := fc()
			query = append(query, sql)
		},
	}})

	var result []User
	err := sess.
		Joins("Manager").

	for idx, field := range fields {
		if field == nil {
			continue
		}

		if len(joinFields) == 0 || len(joinFields[idx]) == 0 {
			db.AddError(field.Set(db.Statement.Context, reflectValue, values[idx]))
		} else { // joinFields count is larger than 2 when using join
			var isNilPtrValue bool
			var relValue reflect.Value
			// does not contain raw dbname