change wordpress Permalink for a single costum post

Question

i am using wordpress with the Permalinks structure:

http://www.example.com/article/

is it possible to have the url with the id for a single costum post?

something like this : http://www.example.com/postid=1234

Answer 1

Post ID based permalinks always work on all posts and pages and will simply redirect you to the permalink version.

Default: "Ugly"

The default looks like

http://example.com/?p=N

where N is the Post ID number. It works on all server environments, but it doesn't look as nice as some of the other options.

From: Using Permalinks