Shulou(Shulou.com)05/31 Report--

This article mainly explains "what are the optimization skills of MySQL". Interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Next, let the editor take you to learn "what are the MySQL optimization skills?"

SQL optimization has become a rigid indicator of whether programmers are good or not, and even the recruitment functions of major companies are clearly marked. If it is you, can you hang the interviewer on this issue or will you be slapped?

Some friends wonder, is SQL optimization really so important? As shown in the following figure, SQL optimization is the way to improve system performance: the lowest cost and the most obvious optimization effect.

If your team is good at SQL optimization, it's a qualitative leap in the usability of your entire large system, and it can really save your boss more than a few dollars.

Optimization cost: hardware > system configuration > database table structure > SQL and index.

Optimization effect: hardware

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