An example Analysis of comparing the Writing Speed of all Fields between select * and select
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:
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