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select top 1 * from PostTags;
/*WITH YearlyTagCounts AS (
    SELECT TOP 5
        t.TagName
    FROM Posts p,
         PostTags pt,
         Tags t
    WHERE p.Id = pt.PostId
    AND pt.TagId = t.Id
    AND YEAR(p.CreationDate) = YEAR(GETDATE())
    GROUP BY t.TagName
    ORDER BY COUNT(p.Id) DESC
),
DailyTagPosts AS (
    SELECT
        p.CreationDate AS CDate,
        t.TagName,
        COUNT(p.Id) AS DailyPostCount
    FROM Posts p,
         PostTags pt,
         Tags t,
         YearlyTagCounts ytc
    WHERE p.Id = pt.PostId
    AND pt.TagId = t.Id
    AND t.TagName = ytc.TagName
    AND YEAR(p.CreationDate) = YEAR(GETDATE())
    GROUP BY p.CreationDate, t.TagName
),
CumulativeTagPosts AS (
    SELECT
        CDate,
        TagName,
        SUM(DailyPostCount) OVER (PARTITION BY TagName ORDER BY CDate ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS CumulativePosts
    FROM DailyTagPosts
)
SELECT
    CDate,
    TagName AS Theme,
    CumulativePosts AS CumulativeNumberOfPosts
FROM CumulativeTagPosts
ORDER BY TagName, CDate;*/

fork query

edited nov 4 jon.doe46194

created nov 4 anonymous