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

This article introduces the relevant knowledge of "mysql in delete, update, page change is what", in the actual case operation process, many people will encounter such a dilemma, then let Xiaobian lead you to learn how to deal with these situations! I hope you can read carefully and learn something!

mysql changes page when delete

Spaces are marked for deletion and can be written. But it wasn't cleaned up.

2. mysql when updating, page changes

If you modify the primary key field, the row in this page will move and the page content will be rewritten.

Changing non-primary key fields does not result in row movement.

Therefore, try not to modify the primary key field.

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