Q&A for professionals and students of engineering
SELECT top 50 question.id as [Post Link], --tagName.tagName as 'tag name', count(*) as 'number of accepted answers', cast(avg(datediff(hour, question.CreationDate, answer.CreationDate)) as char(8)) + 'h ' + cast(avg(datediff(minute, question.CreationDate, answer.CreationDate))%60 as char(8)) + 'm ' + cast(avg(datediff(second, question.CreationDate, answer.CreationDate))%60 as char(8)) + 's' as time FROM posts as question inner join posts as answer on question.acceptedAnswerID = answer.id inner join postTags as tag on question.id = tag.postID inner join tags as tagname on tag.tagID = tagname.id GROUP BY -- tag.tagID tagname.tagName, question.id HAVING count(*) >= 10 and tagname.tagname like '##tagname##' ORDER BY avg(datediff(second, question.CreationDate, answer.CreationDate)) ASC