関連ワード:  sql left outer join vs inner join    sql server left outer join vs inner join performance    sql left outer join inner join    sql left join vs right join vs inner join vs outer join    sql server inner join vs left outer join    sql left outer join inner join 違い    left outer join vs inner join performance    left outer join vs inner join    why use left join instead of inner join  
結果 : sql left outer join vs inner join