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declare @sql nvarchar(max)

create table #result (site sysname
                    , hostname sysname
                    , displayname nvarchar(150)
                    , id integer
                    , upvotes integer
                    , downvotes integer
                    , q integer
                    , a integer)

select @sql = N'insert into #result' + STRING_AGG(concat(N'
select ''', name ,N''' as site
     , ''',hostname ,N'''
     , u.displayname
     , u.id
     , u.upvotes
     , u.downvotes
     , sum(case p.posttypeid when 1 then 1 else 0 end) Q
     , sum(case p.posttypeid when 2 then 1 else 0 end) A
from ', quotename(name), N'.dbo.users u
left outer join ', quotename(name), N'.dbo.posts p on
  p.owneruserid = u.id
where accountid = ##accountid##
group by u.displayname, u.id, u.upvotes, u.downvotes
'),N' 
union all')
from (select convert(nvarchar(max),name) name
    -- , convert(nvarchar(max),sitename)  sitename
    -- , meta
    -- , domain
     ,  concat( 
        -- based on an idea from Glorfindel 
        -- https://meta.stackexchange.com/a/321181
        (case sitename
        WHEN 'Audio' THEN 'video'
        WHEN 'Beer' THEN 'alcohol'
        WHEN 'CogSci' THEN 'psychology'
        WHEN 'Garage' THEN 'mechanics'
        WHEN 'Health' THEN 'medicalsciences'
        WHEN 'Moderators' THEN 'communitybuilding'
        WHEN 'Photography' THEN 'photo'
        WHEN 'Programmers' THEN 'softwareengineering'
        WHEN 'Vegetarian' THEN 'vegetarianism'
        WHEN 'Writers' THEN 'writing'
        WHEN 'Br' THEN 'pt'
        WHEN 'Mathoverflow' THEN concat((meta+'.'), sitename)
        ELSE case when sitename = domain then null else sitename end
        end +'.')
        , (case 
           when sitename <> 'mathoverflow' then (meta+'.') 
           else null 
           end) 
        , (case 
           when sitename <> 'mathoverflow' then concat((domain + '.'), 'com') 
           else 'net' 
           end)
        ) hostname
from (
select name
, case parsename(name,1) 
  when 'Meta' then parsename(name,2)
  else parsename(name,1) 
  end [sitename]
, case parsename(name,1) 
  when 'Meta' then 'meta'
  else null
  end [meta]
  , coalesce(parsename(name,3), parsename(name,2)) [domain]
from sys.databases
where database_id > 5
-- (name not like '%.Meta' or name = 'StackExchange.Meta')
) dbs
) dbsall

exec (@sql)



select *
from #result

fork query

edited apr 30 19

created mar 12 19 rene