RIGHT&之间的区别左联接vs右& SQL中的左外连接 [英] Difference between RIGHT & LEFT JOIN vs RIGHT & LEFT OUTER JOIN in SQL
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问题描述
两者之间的结果有何区别?
What is the difference in results between:
- 正确的联接和正确的外部联接
- 左联接和左外联接?
能否请您通过一些示例进行解释?
Can you please explain it through some examples?
推荐答案
RIGHT JOIN和RIGHT OUTER JOIN之间没有区别.两者是相同的.即，LEFT JOIN和LEFT OUTER JOIN都相同.
There is no difference between RIGHT JOIN and RIGHT OUTER JOIN. Both are the same. That is, LEFT JOIN and LEFT OUTER JOIN both are the same.
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