A natural join automatically joins tables based on columns with the same name and compatible data types.

Sometimes, the join table represents an idea that lends itself to a better name ... For your convenience though, I have added a queries.sql file to movies_db directory. Feel free to write your queries ...

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项目中遇到这么个情况： t1表 和 t2表 都是150w条数据，600M的样子，都不算大。 但是这样一句查询 ↓ select* fromt1 wherephone notin ...

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