Method First

orm/query.go:812–821

First sorts rows by primary key and selects the first row. It is a shortcut for: q.OrderExpr("id ASC").Limit(1)

()

//
//    q.OrderExpr("id ASC").Limit(1)
func (q *Query) First() error {
	table := q.tableModel.Table()

	if err := table.checkPKs(); err != nil {
		return err
	}

	b := appendColumns(nil, table.Alias, table.PKs)
	return q.OrderExpr(internal.BytesToString(b)).Limit(1).Select()
}

// Last sorts rows by primary key and selects the last row.
// It is a shortcut for: