tx = db.Limit(1).Order(clause.OrderByColumn{
		Column: clause.Column{Table: clause.CurrentTable, Name: clause.PrimaryKey},
	})
	if len(conds) > 0 {
		if exprs := tx.Statement.BuildCondition(conds[0], conds[1:]...); len(exprs) > 0 {
			tx.Statement.AddClause(clause.Where{Exprs: exprs})
		}
	}
	tx.Statement.RaiseErrorOnNotFound = true
	tx.Statement.Dest = dest
	return tx.callbacks.Query().Execute(tx)

func (stmt *Statement) AddClauseIfNotExists(v clause.Interface) {
	if c, ok := stmt.Clauses[v.Name()]; !ok || c.Expression == nil {
		stmt.AddClause(v)
	}
}

// BuildCondition build condition
func (stmt *Statement) BuildCondition(query interface{}, args ...interface{}) []clause.Expression {
	if s, ok := query.(string); ok {
		// if it is a number, then treats it as primary key
		if _, err := strconv.Atoi(s); err != nil {