Q&A for music historians, critics, and fans
select tagname, count(*) as c,convert(varchar(10),year(p.creationdate)) + '-'+ convert(varchar(10),month(p.creationdate)) as yearmonth from posts p join posttags pt on pt.postid=p.id join tags t on pt.tagid=t.id where year(p.creationdate) >= 2016 group by tagname, convert(varchar(10),year(p.creationdate)) + '-'+ convert(varchar(10),month(p.creationdate)) having count(*) > 20 order by tagname, convert(varchar(10),year(p.creationdate)) + '-'+ convert(varchar(10),month(p.creationdate))