t.Errorf("invalid data after update, got %+v", product)
	}

	var result Product3
	DB.First(&result, product.ID)

	AssertEqual(t, result, product)

	// Select to change Code, but nothing updated, price should not change
	DB.Model(&product).Select("code").Updates(Product3{Name: "L1214", Code: "L1213"})

	if product.Price != 220 || product.Code != "L1213" || product.Name != "Product New3" {

	)
}

func TestMultipleMany2Many(t *testing.T) {
	type Thing struct {
		ID int
	}

	type Person struct {
		ID       int
		Likes    []Thing `gorm:"many2many:likes"`
		Dislikes []Thing `gorm:"many2many:dislikes"`
	}

	checkStructRelation(t, &Person{},
		Relation{
			Name: "Likes", Type: schema.Many2Many, Schema: "Person", FieldSchema: "Thing",
			JoinTable: JoinTable{Name: "likes", Table: "likes"},

)

func TestUpsert(t *testing.T) {
	lang := Language{Code: "upsert", Name: "Upsert"}
	if err := DB.Clauses(clause.OnConflict{DoNothing: true}).Create(&lang).Error; err != nil {
		t.Fatalf("failed to upsert, got %v", err)
	}

	lang2 := Language{Code: "upsert", Name: "Upsert"}
	if err := DB.Clauses(clause.OnConflict{DoNothing: true}).Create(&lang2).Error; err != nil {
		t.Fatalf("failed to upsert, got %v", err)
	}

	var langs []Language

					for i := 0; i < elemLen; i++ {
						appendToJoins(objs[i], elems.Index(i))
					}
				}

				if joins.Len() > 0 {
					db.AddError(db.Session(&gorm.Session{NewDB: true}).Clauses(clause.OnConflict{DoNothing: true}).Session(&gorm.Session{
						SkipHooks:                db.Statement.SkipHooks,
						DisableNestedTransaction: true,
					}).Create(joins.Interface()).Error)
				}
			}
		}
	}
}

		if !isDryRun {
			return
		}

		ok, mode := hasReturning(db, supportReturning)
		if ok {
			if c, ok := db.Statement.Clauses["ON CONFLICT"]; ok {
				if onConflict, _ := c.Expression.(clause.OnConflict); onConflict.DoNothing {
					mode |= gorm.ScanOnConflictDoNothing
				}
			}

			rows, err := db.Statement.ConnPool.QueryContext(
				db.Statement.Context, db.Statement.SQL.String(), db.Statement.Vars...,
			)

		}

		if len(onConflict.TargetWhere.Exprs) > 0 {
			builder.WriteString(" WHERE ")
			onConflict.TargetWhere.Build(builder)
			builder.WriteByte(' ')
		}
	}

	if onConflict.DoNothing {
		builder.WriteString("DO NOTHING")
	} else {
		builder.WriteString("DO UPDATE SET ")
		onConflict.DoUpdates.Build(builder)
	}

	if len(onConflict.Where.Exprs) > 0 {
		builder.WriteString(" WHERE ")

}

func (sd emptyQueryClause) Build(clause.Builder) {
}

func (sd emptyQueryClause) MergeClause(*clause.Clause) {
}

func (sd emptyQueryClause) ModifyStatement(stmt *gorm.Statement) {
	// do nothing
}

func TestAssociationEmptyQueryClause(t *testing.T) {
	type Organization struct {
		gorm.Model
		Name string
	}
	type Region struct {
		gorm.Model
		Name          string

		totalBatch += batch
		return nil
	}); result.Error == nil || result.RowsAffected > 0 {
		t.Fatal("expected errors to have occurred, but nothing happened")
	}
	if totalBatch != 0 {
		t.Fatalf("incorrect total batch, expected: %v, got: %v", 0, totalBatch)
	}