INNER JOIN，LEFT JOIN，RIGHT JOIN和FULL JOIN有什么区别？ [重复]

问题：

This question already has an answer here: 这个问题已经在这里有了答案：

• What is the difference between “INNER JOIN” and “OUTER JOIN”? “ INNER JOIN”和“ OUTER JOIN”有什么区别？ 25 answers 25个答案

What's the difference between INNER JOIN , LEFT JOIN , RIGHT JOIN and FULL JOIN in MySQL ? MySQL中的 INNER JOIN ， LEFT JOIN ， RIGHT JOIN和FULL JOIN什么区别？

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解决方案：

参考一： https://stackoom.com/question/NwVJ/INNER-JOIN-LEFT-JOIN-RIGHT-JOIN和FULL-JOIN有什么区别-重复
参考二： https://oldbug.net/q/NwVJ/What-s-the-difference-between-INNER-JOIN-LEFT-JOIN-RIGHT-JOIN-and-FULL-JOIN-duplicate

来源：oschina

链接：https://my.oschina.net/stackoom/blog/4476742