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This article mainly introduces the role of MySQL view is what, with a certain reference value, interested friends can refer to, I hope you read this article after a lot of gains, the following let Xiaobian take you to understand.

This article mainly introduces you about the role of MySQL view and whether it can be changed in detail.

A view is a virtual table; unlike a table that contains data, a view contains only queries that retrieve data dynamically when used; it contains no columns or data. Using views simplifies complex sql operations, hides details, and protects data; once views are created, they can be utilized in the same way as tables.

Views cannot be indexed, nor can they have associated triggers or defaults. If there is an order by in the view itself, ordering the view again will be overridden.

Create view: create view XXX as XXXXXX;

For some views, such as Distinct Union, which does not use the join subquery grouping function, it can be updated, and the update to the view will update the base table; but the view is mainly used to simplify the retrieval, protect the data, and is not used for updates, and most views are not updated.

Thank you for reading this article carefully. I hope that Xiaobian's "What is the role of MySQL view" article will be helpful to everyone. At the same time, I hope that everyone will support you more and pay attention to the industry information channel. More relevant knowledge is waiting for you to learn!

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