"created_at": user.CreatedAt,
		"deleted_at": user.DeletedAt,
		"age":        user.Age,
		"birthday":   user.Birthday,
		"active":     true,
	}
	checkField(t, userSchema, reflectValue, values)

	// test setter
	newValues := map[string]interface{}{
		"name":       "valuer_and_setter_2",
		"id":         2,
		"created_at": time.Now(),
		"deleted_at": time.Now(),
		"age":        20,

	if !regexp.MustCompile("SELECT \\* FROM \\(SELECT .name. FROM .users. WHERE .users.\\..deleted_at. IS NULL\\) as u, \\(SELECT .name. FROM .pets. WHERE .pets.\\..deleted_at. IS NULL\\) as p WHERE .u.\\..deleted_at. IS NULL").MatchString(r.Statement.SQL.String()) {
		t.Errorf("Table with escape character, got %v", r.Statement.SQL.String())
	}

			NumericRegexp: nil,
			Vars:          []interface{}{"jinzhu", 1, 999.99, true, []byte("12345"), tt, &tt, nil, "w@g.\"com", myrole, pwd},

	}

	if sql.NullTime(user.DeletedAt).Time.IsZero() {
		t.Fatalf("user's deleted at is zero")
	}

	sql := DB.Session(&gorm.Session{DryRun: true}).Delete(&user).Statement.SQL.String()
	if !regexp.MustCompile(`UPDATE .users. SET .deleted_at.=.* WHERE .users.\..id. = .* AND .users.\..deleted_at. IS NULL`).MatchString(sql) {
		t.Fatalf("invalid sql generated, got %v", sql)
	}

	if !regexp.MustCompile(`WHERE \(a = .+ or b = .+\) AND .users.\..deleted_at. IS NULL`).MatchString(sql) {
		t.Fatalf("invalid sql generated, got %v", sql)
	}

	sql = dryRunDB.Where("a = ? or b = ?", "a", "b").Or("c = ? and d = ?", "c", "d").Find(&User{}).Statement.SQL.String()
	if !regexp.MustCompile(`WHERE \(\(a = .+ or b = .+\) OR \(c = .+ and d = .+\)\) AND .users.\..deleted_at. IS NULL`).MatchString(sql) {

			"SELECT * FROM `users` WHERE name = ? AND `users`.`deleted_at` IS NULL ORDER BY `users`.`id` LIMIT ?",
			"INSERT INTO `users` (`created_at`,`updated_at`,`deleted_at`,`name`,`age`,`birthday`,`company_id`,`manager_id`,`active`) VALUES (?,?,?,?,?,?,?,?,?)",
			"SELECT * FROM `users` WHERE name = ? AND `users`.`deleted_at` IS NULL ORDER BY `users`.`id` LIMIT ?",

		t.Fatalf("Build NOT condition, but got %v", result.Statement.SQL.String())
	}

	result = dryDB.Not(DB.Where("manager IS NULL").Or("age >= ?", 20)).Find(&User{})
	if !regexp.MustCompile(`SELECT \* FROM .*users.* WHERE NOT \(manager IS NULL OR age >= .+\) AND .users.\..deleted_at. IS NULL`).MatchString(result.Statement.SQL.String()) {

		{Name: "UpdatedAt", DBName: "updated_at", BindNames: []string{"Model", "UpdatedAt"}, DataType: schema.Time},
		{Name: "DeletedAt", DBName: "deleted_at", BindNames: []string{"Model", "DeletedAt"}, Tag: `gorm:"index"`, DataType: schema.Time},
		{Name: "Name", DBName: "name", BindNames: []string{"Name"}, DataType: schema.String},

	return tx.callbacks.Update().Execute(tx)
}

// Delete deletes value matching given conditions. If value contains primary key it is included in the conditions. If
// value includes a deleted_at field, then Delete performs a soft delete instead by setting deleted_at with the current
// time if null.
func (db *DB) Delete(value interface{}, conds ...interface{}) (tx *DB) {
	tx = db.getInstance()
	if len(conds) > 0 {

	}

	dryDB := DB.Session(&gorm.Session{DryRun: true})
	stmt := dryDB.Save(&user).Statement
	if !regexp.MustCompile(`.users.\..deleted_at. IS NULL`).MatchString(stmt.SQL.String()) {
		t.Fatalf("invalid updating SQL, got %v", stmt.SQL.String())
	}

	dryDB = DB.Session(&gorm.Session{DryRun: true})
	stmt = dryDB.Unscoped().Save(&user).Statement