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CREATE TABLE #results (site NVARCHAR(250),
                       postid INT,
                       questionid INT,
                       body NVARCHAR(MAX),
                       type NVARCHAR(50),
                       score INT,
                       tags NVARCHAR(250),
                       userid INT,
                       displayname NVARCHAR(40),
                       creationdate DATETIME,
                       title NVARCHAR(250));
                       
DECLARE @sql NVARCHAR(MAX) = '';

SELECT @sql = @sql + IIF(LEN(@sql) > 1, 'UNION ALL', 'INSERT INTO #results') +
N'
SELECT ''' + name + ''', p.Id,
  CASE p.PostTypeId WHEN 1 THEN p.Id WHEN 2 THEN p.ParentId ELSE NULL END,
  p.Body,
  CASE p.PostTypeId WHEN 1 THEN ''Question'' WHEN 2 THEN ''Answer'' ELSE ''PostType = '' + CAST(p.PostTypeId AS NVARCHAR) END,
  p.Score, COALESCE(p.Tags, q.Tags),
  p.OwnerUserId, p.OwnerDisplayName,
  p.CreationDate, COALESCE(p.Title, q.Title)
  FROM ' + QUOTENAME(name) + '.dbo.Posts AS p  
  LEFT OUTER JOIN ' + QUOTENAME(name) + '.dbo.Posts AS q
    ON p.ParentId = q.Id
  WHERE p.Body COLLATE SQL_Latin1_General_CP1_CI_AS LIKE ''%' + ##query:string## + '%''     
'
FROM sys.databases
WHERE database_id > 5
  AND name LIKE '%.Meta';

-- execute it
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',
  URL + '/q/' + CAST(postid AS NVARCHAR)
  + '|' + COALESCE(title, '[LINK]') AS 'link',
  body, type, score, tags, creationdate,
  URL + '/u/' + CAST(userid AS NVARCHAR) + '|' + COALESCE(displayname, '[USER]') AS 'author'
  FROM #Results AS r
  INNER JOIN #Sites AS s
    ON r.Site = s.DatabaseName
  ORDER BY creationdate DESC;
     
DROP TABLE #results;

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