Q&A for anime and manga fans
select year(p.CreationDate), month(p.CreationDate), count(*) from Tags t left join PostTags pt on t.Id = pt.TagId left join Posts p on pt.PostId = p.Id where (Upper(t.TagName) like '%DELPHI%') or (Upper(t.TagName) like '%RAD STUDIO%') or (Upper(t.TagName) like '%PASCAL%') group by year(p.CreationDate), month(p.CreationDate) order by 1, 2