A user deleted a page with many subpages. All these subpages are now orphaned pages. How can I easily delete them all? Or is that not possible, do I have to delete them one by one?
I do not want to mess in the database.
Would a restore of the parent page from trash help?
Since the root page was deleted, I believe that even restoring it would not restore the page tree structure and you'll need to set that again.
There might be a way to remove all pages automatically from the database, but that I wouldn't advise since some SQL error can cause a huge problem.
To see all orphaned pages, you can go to the space admin, content tools and orphaned pages. This documentation explains a bit more.
I think that you'll need to remove the child page one by one, or create a new space and move all the pages you want to that space, removing the space in the end. That may mitigate the work to remove the pages. :)
If you want to delete different subpages in one go (next time!), have a look at the following discussion and check out my instruction there:
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