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select year(creationdate)
     , sum(case when posttypeid=1 and deletiondate is null then 1 else 0 end) as Q
     , sum(case when posttypeid=2 and deletiondate is null then 1 else 0 end) as A
     , sum(case when posttypeid=1 and deletiondate is not null then 1 else 0 end) as [ deleted Q]
     , sum(case when posttypeid=2 and deletiondate is not null then 1 else 0 end) as [deleted A]
     , sum(case when posttypeid=4 and deletiondate is null then 1 else 0 end) as [tag excerpt]
     , sum(case when posttypeid=5 and deletiondate is null then 1 else 0 end) as [tag wiki]
from postswithdeleted       
group by year(creationdate)
order by year(creationdate)

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edited oct 15 codeandcloud

created jun 12 17 anonymous