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/*
select count(*) from Users 
where id not in(
  select distinct(OwnerUserId) from Posts 
  where year(CreationDate) = 2018 and PostTypeId = 1 and OwnerUserId is not null)
  */
  
  select count(*) from Users
  where Users.Reputation > 100 
  and Users.id in (
    select distinct(OwnerUserId) from Posts
    where Tags like '%sql%'
    ) 
  and Users.id in (
    select distinct(OwnerUserId) from Posts
    where Tags like '%java%'
    )

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