sql - 如何修改以下代码以忽略带 0 的行并每周显示输出

Question

我的以下查询给出了图 1 中所示的输出。我想对其进行更改，以便它给出图 2 中的输出。我想显示每周(即使该值为 0) 这是查询。请帮忙。

SELECT @MaxDate = @MaxDate
    ,@MinDate = dateadd(week, (@LastXWeeks + 1), @MaxDate);

WITH AllDates
AS (
    SELECT @MinDate AS xDate

    UNION ALL

    SELECT Dateadd(day, 1, xDate)
    FROM AllDates AS ad
    WHERE ad.xDate < @MaxDate
    )
SELECT 'playing' AS activity
    ,ad.xDate
    ,Isnull(t.TimePerDay, 0) AS TimePerDay
FROM AllDates AS ad WITH (NOLOCK)
LEFT JOIN @test AS t ON ad.xDate = t.DATE

Answer 1

您希望每周获得结果，因此按周分组:

WITH AllDates
AS (
    SELECT @MinDate AS xDate

    UNION ALL

    SELECT Dateadd(day, 1, xDate)
    FROM AllDates AS ad
    WHERE ad.xDate < @MaxDate
    )
SELECT 
  'playing' AS activity
  ,min(ad.xDate) -- or max or the week number, whichever you like best
  ,Isnull(sum(t.TimePerDay), 0) AS TimePerDay
FROM AllDates AS ad WITH (NOLOCK)
LEFT JOIN @test AS t ON ad.xDate = t.DATE
GROUP BY datepart(wk, ad.xDate);