What are the differences between mysql8.0 and 5.7?

The differences between mysql8.0 and 5.7 are: 1. MySQL8.0 introduces faster and more efficient encoders and decoders, while MySQL5.7’s encoders and decoders are slower; 2. Authentication method Different, MySQL8.0 is more secure than the login authentication plug-in of MySQL5.7; 3. MySQL 8.0 introduces more window functions, while MySQL5.7 has no improvement in this aspect; 4. MySQL8.0 is better than MySQL 5.7 in terms of performance and stability Safer and more efficient.

Operating system for this tutorial: Windows 10 system, MySQL 8 version, Dell G3 computer.

The differences between mysql8.0 and 5.7 are:

1. Encoder and decoder

MySQL 8.0 introduced Faster and more efficient encoders and decoders that communicate via protocols and support optimizations for compression, encryption, concurrency, and more. In comparison, MySQL 5.7's encoders and decoders are slower.

#2. Authentication method

MySQL 8.0 uses caching_sha2_password as the login authentication plug-in by default, while MySQL 5.7 uses mysql_native_password by default. The former is the more secure option because it supports SHA-256 key hashed (salted) passwords, while the latter only supports one-way MD5 hashed passwords.

3. Window function

MySQL 8.0 introduces more window functions, which can perform various analysis operations, such as sorting, ranking, moving average, etc. This makes query operations more efficient and flexible. MySQL 5.7 has no improvements in this area.

4. Other improvements

MySQL 8.0 includes many other new features and improvements, such as JSON data type, InnoDB alternative , Atomic DDL statements, multi-index scans, table-level DDL operations, non-persistent TEMPTABLE, etc. MySQL 5.7 also has some improvements, but they are much less compared to MySQL 8.0.

Therefore, although MySQL 5.7 is already excellent in terms of performance and stability, if you need improvements such as higher security, more powerful functions, and better performance and flexibility, then choose MySQL 8.0 Might be more suitable.

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