「SQL」右外部結合(right outer join)のサンプル
書式
select
カラム名
from テーブル1
right outer join テーブル2
on
結合条件
使用例
select
ta.orderid
, tb.lastname
from
orders ta
right join employees tb
on ta.employeeid = tb.employeeid
order by
ta.orderid;
select
ta.orderid
, tb.lastname
from
orders ta
right join employees tb
on ta.employeeid = tb.employeeid
order by
ta.orderid;
select ta.orderid , tb.lastname from orders ta right join employees tb on ta.employeeid = tb.employeeid order by ta.orderid;
結果
orderid | lastname |
---|---|
West | |
10248 | Buchanan |
10249 | Suyama |