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Q&A for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles

SELECT
  DATEADD(WEEK, DATEDIFF(WEEK, 0, Q.CreationDate), 0) AS [Week]
  , COUNT(*) 
FROM Posts AS Q
INNER JOIN PostTags ON PostTags.PostId = Q.Id
INNER JOIN Tags ON PostTags.TagId = Tags.Id
  AND Tags.TagName = 'firebase' AND Q.PostTypeId = 1 
  AND CreationDate > '2015-01-01'
INNER JOIN Posts AS A ON A.ParentId = Q.Id
  AND A.OwnerUserId in (
  209103, -- puf
  394010, -- katowulf
  110915, -- mikelehen
  879295, -- rdimarco
  1373162, -- deast
  5385206, -- sganem
  3875023, -- mpmcdonald
  5081766, -- bojeil
  807126, -- dougstevenson
  1410370, -- arthurthompson
  839465, -- mimming
  324977, -- samstern
  819314, -- ianbarber
  1172232, -- gregsoltis
  937583, -- raynor
  613115, -- dgiorgino
  0
)
GROUP BY DATEADD(WEEK, DATEDIFF(WEEK, 0, Q.CreationDate), 0)

/*
SELECT 
  DATEADD(WEEK, DATEDIFF(WEEK, 0, CreationDate), 0) AS [Week]
  , COUNT(*) AS QCount
FROM Posts
INNER JOIN PostTags ON PostTags.PostId = Posts.Id
INNER JOIN Tags ON PostTags.TagId = Tags.Id
WHERE Tags.TagName = 'firebase' AND PostTypeId = 1 AND CreationDate > '2015-01-01'
GROUP BY DATEADD(WEEK, DATEDIFF(WEEK, 0, CreationDate), 0)
UNION
SELECT 
  DATEADD(WEEK, DATEDIFF(WEEK, 0, CreationDate), 0) AS [Week]
  , COUNT(*) AS GACount
FROM Posts
WHERE OwnerUserId in (
  209103, -- puf
  394010, -- katowulf
  110915, -- mikelehen
  879295, -- rdimarco
  1373162, -- deast
  5385206, -- sganem
  3875023, -- mpmcdonald
  5081766, -- bojeil
  807126, -- dougstevenson
  1410370, -- arthurthompson
  839465, -- mimming
  324977, -- samstern
  819314, -- ianbarber
  1172232, -- gregsoltis
  937583, -- raynor
  613115, -- dgiorgino
  0
)
  AND CreationDate > '2015-01-01'
GROUP BY DATEADD(WEEK, DATEDIFF(WEEK, 0, CreationDate), 0)
*/

view current version

edited jul 12 16

created jul 12 16 Frank van Puffelen