SQL JOIN - WHERE 子句与 ON 子句 - SQL JOIN - WHERE clause vs. ON clause

问题：

After reading it, this is not a duplicate of Explicit vs Implicit SQL Joins .阅读后，这不是Explicit vs Implicit SQL Joins的重复。 The answer may be related (or even the same) but the question is different.答案可能相关（甚至相同），但问题不同。

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What is the difference and what should go in each?有什么区别，每个应该包含什么？

If I understand the theory correctly, the query optimizer should be able to use both interchangeably.如果我正确理解了理论，查询优化器应该能够互换使用两者。

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解决方案：

参考一： https://stackoom.com/question/1U6o
参考二： SQL JOIN - WHERE clause vs. ON clause