Why isn't my Canonical URL rendering in my first post?

Why isn't my first post giving cross-post credit to my blog?

This is my front matter:

title: "Pourquoi - et comment - apprendre PL/SQL (…T-SQL…PL/pgSQL…)"
published: true
description: "Pourquoi les bases de données incluent, en plus de SQL, des langages 'procéduraux' -- et comment en apprendre un"
tags: ['explainlikeimfive','discuss','sql','french']
canonical_url: https://katiekodes.com/sql-pourquoi-plsql
cover_image: https://thepracticaldev.s3.amazonaws.com/BlahBlahBlah.png

Thanks so much, everybody -- this looks like a great community!

Comments

[Ben Halpern]

This is probably a matter of us being unclear what canonical_url does.

This post does have the canonical_url meta tag.

But it doesn't have the crossposted indication which only comes from stuff loaded via RSS.

This is probably unclear and should be changed.

[Johannes Millan]

I know this is a very old thread, but I was unable to find the information elsewhere. Is this still true that using canonical_url adds a canonical tag and that RSS is the way to go to get the cross-post credit?

[Katie]

Seems to be ... in fact, I had to unpublish an old RSS-imported post that wouldn't stop cross-crediting a post that had died on my site (Jekyll / GitHub Pages just seems insistent upon eating it) and copy/paste the contents into a new post to make it a standalone Dev post. Otherwise, Dev kept putting the little italicized link in the top.

[Johannes Millan]

Thank you very much Katie for letting me know!

[Katie]

Thanks so much! I haven't finished setting up an RSS feed for my blog, yet, so I'll just put it in fine print at the top as part of the post. :-)

[Adrian Mejia]

@katiekodes I'm planning to do the same. Copy post from my website to this platform as well using the canonical url. How do you get crosspost indication?

[Katie]

See Ben's comment on this thread -- you have to have an XML feed and wait for a post to show up in your dev.to dashboard from that!