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Q&A about the site for people looking to bypass life's everyday problems with simple tricks

SELECT 
    Tags.TagName as TransportType,
    COUNT(DISTINCT Posts.Id) as QuestionCount,
    AVG(CAST(Posts.Score as FLOAT)) as AvgScore,
    SUM(Posts.ViewCount) as TotalViews
FROM Posts
LEFT JOIN PostTags ON Posts.Id = PostTags.PostId
LEFT JOIN Tags ON PostTags.TagId = Tags.Id
LEFT JOIN Users ON Posts.OwnerUserId = Users.Id
WHERE Tags.TagName IN ('air-travel', 'trains', 'car-rentals', 'public-transport', 'cruise')
    AND Posts.PostTypeId = 1
GROUP BY Tags.TagName
ORDER BY QuestionCount DESC;

fork query

edited dec 6

created dec 6 anonymous