Html-stretchers on cms like wordpress, etc. need to know the sql language and be able to write database queries?

Question

PHP

I typed it up a little under wordpress and noticed that everything is done there so that you don’t need to write database queries, there is a very simple selection, etc. But if you make your own admin panel, I'm not talking about the wordpress level, but several forms and tables where I could change the content of the site, there you need to write queries to the database and pull information from it.
As I understand the situation, if a person is an Html-tensioner on cms, then he does not need to know database queries, since he is unlikely to come across them, and if you are a php programmer and your work is more related to writing functionality from scratch, then you need to know sql and requests.
Who has experience in the above professions, what can you say from personal experience?

Answer 1

Tensioners))) They stretch the woman, and here they make up under cms.
You need to understand the structure of the output to template variables

Answer 2

Stretching designs on the Internet - yes, it is enough to know css and html (and the cms template engine), but, usually, no one is guided so narrowly when learning.
There is no such person who would be an exceptional layout encyclopedia, and, at the same time, did not know the basic information about the server side.

Answer 3

Stretching is essentially a modification of the view without changing the data, ideally in any framework it should be possible to separate the data and the view so that any page can be easily redone with only HTML, CSS, JS and shortcodes, etc. for communication with data, but in practice absolutely everywhere there are "monoliths", "combines" that do not allow you to change the view without basic skills in the back-end, and Wordpress is by no means an exception, its developers did not set such a goal at all, it even not MVC.