checkField(&UniqueStruct5{}, "name", false, "idx_unique_struct5_name")
	checkField(&UniqueStruct6{}, "name", false, "idx_unique_struct6_name")

	checkField(&UniqueStruct7{}, "name", false, "")
	checkField(&UniqueStruct7{}, "nick_name", false, "")
	checkField(&UniqueStruct7{}, "nick_name", false, "")

	type UniqueStruct8 struct { // unique and uniqueIndex
		Name string `gorm:"size:60;unique;index:my_us8_index,unique;"`
	}

	}

	DB.Create(&users)

	var names []string
	if err := DB.Model(User{}).Where("name like ?", "pluck-user%").Order("name").Pluck("name", &names).Error; err != nil {
		t.Errorf("got error when pluck name: %v", err)
	}

	var names2 []string
	if err := DB.Model(User{}).Where("name like ?", "pluck-user%").Order("name desc").Pluck("name", &names2).Error; err != nil {
		t.Errorf("got error when pluck name: %v", err)