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Q&A for programmers

SET DATEFORMAT ymd;

SELECT Tags.TagName, 
  CONVERT(VARCHAR(7), Posts.CreationDate, 126) as month 
  , COUNT(*) as tag_count
FROM
  Posts
  JOIN PostTags ON PostTags.PostId = Posts.Id
  JOIN Tags ON Tags.Id = PostTags.TagId 
WHERE
  Tags.TagName IN (
    'google-cloud-firestore'
    , 'google-cloud-datastore'
    , 'google-cloud-memorystore'
    , 'google-cloud-sql'
    , 'google-cloud-bigtable'
    , 'google-cloud-spanner'
    , 'google-cloud-bigquery'
    , 'amazon-dynamodb'
    , 'amazon-redshift'
    , 'amazon-rds'
    , 'azure-sql-database'
    , 'azure-cosmosdb'
    , 'cloudant'
  )
  AND Posts.CreationDate < DATEADD(month, DATEDIFF(month, 0, GETDATE()), 0)
GROUP BY
  Tags.TagName,
  CONVERT(VARCHAR(7), Posts.CreationDate, 126)
ORDER BY month DESC, tag_count desc

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edited jan 14

created jan 14 Dan McGrath