The difference Mysql8 and Mysql5

the difference:

1.mysql8 twice the performance of mysql5.

2.mysql8 support the creation of implicit index, when the index data is hidden when the query optimizer will not be using. You can hide under reduced efficiency index test whether, if the query efficiency index as explained useless, you can consider dropping the index.

3. The window functions, more functions can be little more than write code to achieve functionality.

 

Reference website:

https://blog.csdn.net/CN_mengxin/article/details/81518800