Q&A about the site for administrators, end users, developers and designers for Craft CMS
SELECT Users.Id, Tags.tagname FROM Users INNER JOIN Posts ON Posts.OwnerUserId = Users.Id INNER JOIN PostTags ON PostTags.TagId = Posts.ParentId INNER JOIN Tags ON PostTags.TagId = Tags.id where tags.tagname in ('php') GROUP BY Users.Id, tags.tagname --order by users.id