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Look for all questions where two users have contributed with any of question, answer or comment

Q&A for pro webmasters

-- Where have we met before?
-- Look for all questions where two users have contributed with any of question, answer or comment

select coalesce(parentid,id) 
from posts 
where owneruserid=##UserA## --533832
      or exists(select * from comments where postid=posts.id and userid=##UserA##)
intersect
select coalesce(parentid,id) 
from posts 
where owneruserid=##UserB## --15354
      or exists(select * from comments where postid=posts.id and userid=##UserA##)

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edited oct 19 11

created oct 19 11 Jack Douglas