可能性の重複:私の研究に基づいて
Left join and Left outer join in SQL Server左外部結合は左結合と同じですか?
、次の文は正しい
A) Join is the same as inner join.
B) Left outer join is the same as left join
C) Right outer join is the same as right join
D) There is no such thing as left inner join and right inner join
まず第一に、あなたは '宿題 'タグを置くべきだと思います。 –