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Q&A for professional robotic engineers, hobbyists, researchers and students

select (comment.null_comment / total.total_user) * 100 from
(select count(*) as null_comment from users u
where not exists(select * from posts p where u.id = p.owneruserid)) comment,
(select count(*) as total_user from users u) total
--19441484
--25781948

view current version

edited sep 9

created sep 9 jon.doe45636