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This article mainly shows you the "MySQL index does not take effect what to do", the content is easy to understand, clear, hope to help you solve doubts, the following let the editor lead you to study and learn "MySQL index does not take effect how to do" this article.

The solution is as follows:

1. Use the following command for analysis.

Analyze table tableName for analysis

2. Query again and you can find that the index is valid.

The above is all the contents of the article "what if the index is not valid in MySQL". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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