Shulou(Shulou.com)06/03 Report--

This article mainly introduces the example analysis of comparing the writing speed of all fields of select * and select. The article is very detailed and has a certain reference value. Interested friends must read it!

Of course, the following are purely tests and have not been applied to the actual project.

Number of times * query field query for the first time

The second time

The third time

The test code is as follows:

The above is all the contents of the article "sample Analysis of comparing the Writing Speed of all fields of select * and select". Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

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