clause.NamedExpr{"?", []interface{}{clause.Column{Name: "name"}}},
						clause.NamedExpr{"LENGTH(?)", []interface{}{clause.Column{Name: "mobile"}}},
					},
				},
			}, clause.From{}},
			"SELECT `id`, `name`, LENGTH(`mobile`) FROM `users`", nil,
		},
		{
			[]clause.Interface{clause.Select{
				Expression: clause.CommaExpression{
					Exprs: []clause.Expression{
						clause.Expr{

		Email  string
		Mobile string `gorm:"default:'133xxxx'"`
	}

	err := DB.Migrator().DropTable(&OnConflictUser{})
	AssertEqual(t, err, nil)
	err = DB.AutoMigrate(&OnConflictUser{})
	AssertEqual(t, err, nil)

	u := OnConflictUser{
		ID:     "on-conflict-user-id",
		Name:   "on-conflict-user-name",
		Email:  "on-conflict-user-email",
		Mobile: "on-conflict-user-mobile",
	}