Main vs. meta traffic

1

Please login or register to vote for this query.

(click on this box to dismiss)

Bicycles Meta

Q&A about the site for people who build and repair bicycles, people who train cycling, or commute on bicycles

-- Temporary table to store the results
CREATE TABLE #results (
  site NVARCHAR(250),
  viewcount BIGINT
);

-- We'll need (at least) one INSERT statement for each site, they'll end up in this variable
DECLARE @sql NVARCHAR(MAX) = '';

-- Generate INSERT statements:
-- - Use the database's `name` to indicate the site (this can be converted to site name later on)
-- - Fully qualify table names
SELECT @sql = @sql + 'INSERT INTO #results' + N'
SELECT ''' + name + ''', SUM(CAST(ViewCount AS BIGINT))
  FROM ' + QUOTENAME(name) + '.dbo.Posts;
'
FROM sys.databases
WHERE database_id > 5 -- that's where the site databases begin
  AND name NOT LIKE '%_Temp'; -- these are used during the weekly SEDE refresh

-- Execute SQL with INSERT statements
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;

-- Present the results by joining them with the sites table
SELECT SiteName AS 'site',
  r0.ViewCount AS 'main site views',
  r1.ViewCount AS 'meta site views',
  ROUND(CAST(r0.ViewCount AS FLOAT) / r1.ViewCount, 2) AS 'ratio'
  FROM #Results AS r0
  INNER JOIN #Results AS r1
    ON r1.site = r0.site + '.Meta'
  INNER JOIN #Sites AS s
    ON r0.Site = s.DatabaseName
  ORDER BY 4;
     
-- Drop temporary tables
DROP TABLE #results;
DROP TABLE #sites;

Enter Parameters

Options:
Switch to main site
loading Hold tight while we fetch your results