可能重複:
Left join and Left outer join in SQL Server左外連接與左連接相同嗎?
根據我的研究,下面的語句是正確的
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
首先,我認爲你應該放一個'家庭作業'標籤。 – 2012-03-27 13:01:11