Deleting wp_commentmeta

I’m trying to reduce the size of my Database.

Aside from the usual post revisions, optimize and repair, I’ve come across several posts about wp_commentmeta and akismet

I have 10mb of data in wp_commentmeta.

Can anyone confirm that deleting the content here is only deleting Akismet data? And nothing else.

DELETE FROM wp_commentmeta WHERE comment_id NOT IN (SELECT comment_id FROM wp_comments);

(no saving)

**

DELETE FROM wp_commentmeta WHERE meta_key LIKE ‘%akismet%’;

(10mb saving)

I did this on a trial DB and the size of wp_commentmeta certainly went down to 215kb. A substantial saving of 10MB.

However upon looking at the WP dashboard Akismet still has a record of

Akismet has protected your site from 119,403 spam comments already.

Is this just a simple text file recording the number, or is there still data somewhere? I was under the impression the two sql queries would make this 00.

I don’t need akismet at the moment as I’m using another very successful anti spam tool, so I don’t mind the records being wiped.

No problem if it’s just a record, just looking for confirmation?

Likewise confirmation that deleting wp_commentmeta is not doing damage anywhere else?

All seems fine, just looking to confirm.