左外部联接和左联接是否相同? [英] Are left outer joins and left joins the same?

问题描述

我见过称为LEFT OUTER JOIN或RIGHT OUTER JOIN的联接.在某些地方，我见过LEFT JOIN或RIGHT JOIN.我对此感到困惑.

I have seen joins called LEFT OUTER JOIN or RIGHT OUTER JOIN. In some places I have seen LEFT JOIN or RIGHT JOIN. I am confused by this.

我发布了问题 2天前，但我无法理解解决方案提供的链接.

I posted a question 2 days ago, but I am unable to understand the links the solutions provide.

这些连接类型是否相同，或者两者之间有区别?

Are these types of joins both the same, or is there some difference between the two?

推荐答案

两者之间没有区别. 请参考联接的视觉表示

There are no difference between both. Refer visual represenation of joins

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