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CREATE TABLE #results (site NVARCHAR(250),
                       postid INT,
                       posttypeid INT,
                       questionid INT,
                       body NVARCHAR(MAX),
                       score INT,
                       tags NVARCHAR(250),
                       creationdate DATETIME,
                       title NVARCHAR(250));                       
DECLARE @sql NVARCHAR(MAX) = '';
SELECT @sql = @sql + IIF(LEN(@sql) > 0, 'UNION ALL', 'INSERT INTO #results') + N'
SELECT ''' + name + ''', p.Id, p.PostTypeId, v.PostId,
  p.Body, p.Score, p.Tags, p.CreationDate, p.Title
  FROM ' + QUOTENAME(name) + '.dbo.Users AS u
  INNER JOIN ' + QUOTENAME(name) + '.dbo.Votes AS v
    ON v.UserId = u.Id
   AND v.VoteTypeId = 5 -- Bookmark
  INNER JOIN ' + QUOTENAME(name) + '.dbo.Posts AS p
    ON v.PostId = p.Id
  WHERE u.AccountId = ' + CAST(##AccountId:int## AS NVARCHAR) + '
UNION ALL
SELECT ''' + name + ''', p.Id, p.PostTypeId, v.PostId,
  p.Body, p.Score, NULL, p.CreationDate, q.Title
  FROM ' + QUOTENAME(name) + '.dbo.Users AS u
  INNER JOIN ' + QUOTENAME(name) + '.dbo.Votes AS v
    ON v.UserId = u.Id
   AND v.VoteTypeId = 5 -- Bookmark
  INNER JOIN ' + QUOTENAME(name) + '.dbo.Posts AS q
    ON v.PostId = q.Id
  INNER JOIN ' + QUOTENAME(name) + '.dbo.Posts AS p
    ON p.ParentId = q.Id
  WHERE u.AccountId = ' + CAST(##AccountId:int## AS NVARCHAR) + '
'
FROM sys.databases
WHERE database_id > 5;
-- AccountId: The global account ID of the user, which you can find in the URL of their network profile. Visit this link: http://stackexchange.com/users/current to see your own ID.
EXEC (@sql);

-- Site details, cf. https://meta.stackexchange.com/a/359795/295232
CREATE TABLE #Sites (URL NVARCHAR(100), SiteName NVARCHAR(100), DatabaseName NVARCHAR(50));
-- fetch Markdown for post containing table with site details
DECLARE @md NVARCHAR(MAX);
SELECT TOP 1 @md = Text
  FROM [StackExchange.Meta].dbo.PostHistory
  WHERE PostId = 359796 AND PostHistoryTypeId = 5
  ORDER BY CreationDate DESC;
-- split Markdown on pipe symbol
CREATE TABLE #TableEntries (ID INT IDENTITY(1, 1), Value NVARCHAR(100));
INSERT INTO #TableEntries (Value)
SELECT LEFT(TRIM(VALUE), 100) FROM STRING_SPLIT(@md, '|')
  WHERE LEN(TRIM(REPLACE(REPLACE(VALUE, CHAR(10), ''), CHAR(13), ''))) > 0;
-- 'pivot' - we have to discard the introductory text, headers and horizontal lines
INSERT INTO #Sites
SELECT t0.Value, t1.Value, t2.Value
  FROM #TableEntries AS t0
  INNER JOIN #TableEntries AS t1
    ON t0.Id + 1 = t1.Id
  INNER JOIN #TableEntries AS t2
    ON t0.Id + 2 = t2.Id
  WHERE t0.Id >= 8 -- that's where the real content starts
    AND t0.Id % 3 = 2;

SELECT SiteName AS 'Site',
  CONCAT(URL, '/q/', CAST(PostId AS NVARCHAR), '|', Title) AS 'Link',
  CASE WHEN PostTypeId = 1 THEN 'Question' ELSE 'Answer' END AS 'Type',
  Body, Score, Tags, CreationDate
  FROM #Results AS r
  INNER JOIN #Sites AS s
    ON r.Site = s.DatabaseName
  ORDER BY SiteName, QuestionId, PostTypeId
     
DROP TABLE #results

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