Mysql show databases limit rows11/23/2023 ![]() (This is not the case with cursor pagination.) Convincing arguments have been made that directly addressable pages shouldn't ever be exposed to users because they have no semantic meaning. ![]() Users who want to navigate from page 1 directly to page 10 can do so quite easily, provided your interface exposes page links. The query is simple.Īnother strength of this method is that pages are directly addressable. The query construction is always the same. It doesn't matter what pages the user has visited before. It doesn't require tracking any state over time each request can stand alone. One of the great strengths of offset/limit pagination is that it's easy to implement and easy to understand. We have a video overview of offset/limit pagination, if you prefer that medium. Given this table full of people named Aaron: If you sort your rows by a column that is not unique, MySQL gets to decide which order to return these rows in. When your query is ordered deterministically, it means that MySQL has enough information to order your rows in the exact same way every single time. The importance of deterministic orderingīefore we talk about the wonders of pagination, we need to talk about deterministic ordering. They each have their own strengths and weaknesses. Neither is inherently better than the other. Which method you choose depends on your use case and your application's requirements. There are two primary ways to paginate in MySQL: offset/limit and cursors. ![]() Instead of pulling all the records out of the database, we only pull a single page that we're going to show to the user. Pagination is another way to "select only what you need." Although, this time, we're limiting the rows instead of the columns. By limiting the columns returned, you're selecting only what you need. One way this advice manifests itself is to not use SELECT * if you don't need all the columns. Any good DBA will tell you to " select only what you need." It's one of the most common aphorisms, and for good reason! We don't ever want to select data that we're just going to throw away.
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