How in phpMyAdmin to create an arbitrary field "photobox" for all Wordpress posts at once? Thought in what ... Plug-ins create fields using queries to the database. So can the same thing be done via the phpMyAdmin console? To not order the script. The action is still one-time.
UPDATE:
"Having created a PP, it is already available for all posts" - if you create it with your hands, only for those posts where you create it with your hands. And since there are several thousand posts, you understand ...
I have an export / import script through excel, I’ll then correct them. While the field in the database is not created, there is nothing to correct.
About the "break the site" - the database dump solves this issue.