Limiting the number of records in a bootstrap 4 generated table displaying on a page at one time

[Teodor]

Just the first paragraph already answers your question:

Database Single Query

You can create a database query which returns a single record. That’s really useful in cases where you filter your data and expect a single result to be returned, like retrieving the logged in user info - so no complicated repeats are required. In this tutorial we will show you how to filter a Single Query and use the result directly in the rest of the Server Action steps. We created a server action, which is going to be used for retrieving the logged user details, so we already added the st…

You really need to look at the documentation. It's there to help you!