1

所以我有几个类似于这样结构的表：

  • Run ([RunID], [PlayerID], [Score])

  • Jump ([ID], [RunID], [Time], [Type])

有 4 种“类型”的时间 2“向上”和 2“向下”。

我需要在给定的运行中获得“上升”和“下降”之间的时间。

基本上，在进行“跳跃”时的“奔跑”期间，我记录了一个上升时间，并在相应的着陆记录了一个下降（每次运行只有一对）。在“跑步”结束时，我需要显示“在空中”的总时间，以及每次跳跃的时间。我在想最好的方法是转储到具有以下结构的临时表中：

@tempJump ([RunID], [TimeUp], [TimeDown])

然后我将拥有所有需要的信息来计算和填充必要的字段。

到目前为止，我已经尝试了从简单的选择/连接到可怕的游标的所有方法，但是我无法将“ups”与相应的“downs”匹配并将它们放入具有正确“run”的临时表中。

关于实现这一目标的最佳方法的任何想法？

编辑：

示例架构：

    CREATE TABLE Run
    ([RunID] int, [PlayerID] int, [Score] int)
;

INSERT INTO Run
    ([RunID], [PlayerID], [Score])
VALUES
    (1, 1, 1000),
    (2, 1, 1100),
    (3, 1, 800),
    (4, 2, 1500),
    (5, 1, 900)
;

CREATE TABLE Jump
    ([JumpID] int, [RunID] int, [Time] datetime, [Type] int)
;

INSERT INTO Jump
    ([JumpID], [RunID], [Time], [Type])
VALUES
    (1, 1, '2013-08-13 18:00:04', 1),
    (2, 1, '2013-08-13 18:00:10', 2),
    (3, 2, '2013-08-13 18:02:15', 1),
    (4, 2, '2013-08-13 18:02:45', 4),
    (5, 3, '2013-08-13 18:04:20', 3),
    (6, 3, '2013-08-13 18:05:01', 2),
    (7, 4, '2013-08-13 18:10:12', 3),
    (8, 4, '2013-08-13 18:11:25', 4),
    (9, 5, '2013-08-13 18:15:00', 1),
    (10, 5, '2013-08-13 18:25:20', 4)
;

CREATE TABLE JumpType
    ([TypeID] int, [Description] varchar(12))
;

INSERT INTO JumpType
    ([TypeID], [Description])
VALUES
    (1, 'UpPlatform'),
    (2, 'DownPlatform'),
    (3, 'UpBoost'),
    (4, 'DownBoost')
;

查询的预期输出将是一个类似于以下内容的临时表：

RunID        PlayerID          TimeUp                     TimeDown
 1              1          '2013-08-13 18:00:04'       2013-08-13 18:00:10
4

4 回答 4

2

编辑

根据您更新的问题，这将起作用。我加入了你的跳跃类型表，而不是假设 id （我个人认为假设 id 是一个坏主意，例如假设 1 和 3 是向上类型）

此外，我使用内部连接来获得相应的向下跳跃 -我假设如果跳线上升，他会下降；）

select
    r.RunID,
    r.PlayerID,
    TimeUp = uj.[Time],
    TimeDown = dj.[Time],
    TimeDifference = DATEDIFF(MILLISECOND, uj.Time, dj.Time)
from @Run r
inner join @Jump uj on uj.RunID = r.RunID
inner join @JumpType ut on ut.TypeID = uj.[Type] 
inner join @Jump dj on dj.RunID = uj.RunID
inner join @JumpType dt on dt.TypeID = dj.[Type]
where ut.[Description] like '%Up%'
and dt.[Description] like '%Down%'

原创 - 在您向我们展示您的架构之前

这是我想出的

类型表指示它是否与该IsUpElseAssumeIsDown字段一起处于上升或下降时间

declare @TimeType table (Id int, Name nvarchar(20), IsUpElseAssumeIsDown bit)

insert into @TimeType (Id, Name, IsUpElseAssumeIsDown) values 
(1, '1st Up Type', 1), (2, '1st Down Type', 0),
(3, '2st Up Type', 1), (4, '2st Down Type', 0)

现在设置跳转进行测试

declare @Jump table ([ID] int, [RunID] int, [Time] time, [Type] int)

insert into @Jump ([ID], [RunID], [Time], [Type]) values
(1, 1, '10:00:05.000', 1), (2, 1, '10:00:15.000', 2),
(3, 2, '10:00:15.000', 3), (4, 2, '10:00:25.100', 4),
(5, 3, '10:00:25.000', 1), (6, 3, '10:00:35.200', 4),
(7, 4, '10:00:35.000', 3), (8, 4, '10:00:45.300', 4),
(9, 5, '10:00:45.000', 1), -- no down time for 1st up type 
(10, 6, '10:00:55.000', 3) -- no down time for 2nd up type

最后一个查询来得到我们的结果

-- @tempJump ([RunID], [TimeUp], [TimeDown])

;with UpJump
as
(
    select j.RunID, j.[Time]
    from @Jump j
    inner join @TimeType t on t.Id = j.[Type] 
    where t.IsUpElseAssumeIsDown = 1
)
,DownJump
as
(
    select j.RunID, j.[Time]
    from @Jump j
    inner join @TimeType t on t.Id = j.[Type] 
    where t.IsUpElseAssumeIsDown = 0
)
select 
    u.RunID, 
    TimeUp = u.[Time],
    TimeDown = d.[Time],
    TimeDifference = DATEDIFF(MILLISECOND, u.Time, d.Time) 
from UpJump u
inner join DownJump d on d.RunID = u.RunID

结果在这个

RunID   TimeUp              TimeDown            TimeDifference
1       10:00:05.0000000    10:00:15.0000000    10000
2       10:00:15.0000000    10:00:25.1000000    10100
3       10:00:25.0000000    10:00:35.2000000    10200
4       10:00:35.0000000    10:00:45.3000000    10300

我使用 cte's 使查询更具可读性，但您可以这样编写（仅使用连接）

select 
    uj.RunID, 
    TimeUp = uj.[Time],
    TimeDown = dj.[Time],
    TimeDifference = DATEDIFF(MILLISECOND, uj.Time, dj.Time)
from @Jump uj
inner join @TimeType ut on ut.Id = uj.[Type] 
inner join @Jump dj on dj.RunID = uj.RunID
inner join @TimeType dt on dt.Id = dj.[Type]
where ut.IsUpElseAssumeIsDown = 1 
and dt.IsUpElseAssumeIsDown = 0
于 2013-08-14T05:26:57.393 回答
1 
select
    r.RunID, r.PlayerID, ju.Time as TimeUp, jd.Time as TimeDown
from Run as R 
    left outer join Jump as ju on ju.RunID = r.RunID and ju.[Type] in (1, 3)
    left outer join Jump as jd on jd.RunID = r.RunID and jd.[Type] in (2, 4)

sql 小提琴演示

于 2013-08-14T05:42:32.550 回答
0 
select J.RunID,Max(R.PlayerID) as PlayerID,min(J.Time) as TimeUP,max(J.time) as TimeDown
from Run R
inner join Jump J on R.RunID=J.RunID
inner join JumpType JT on J.Type=JT.TypeID
where JT.Description in ('UpPlatform','DownPlatform')
or JT.Description in ('UpPlatform','DownPlatform')
group by J.RunID
having COUNT(J.RunID)>1

SQL小提琴

于 2013-08-14T05:56:38.127 回答
0 
SELECT r.RunID, up.Time, down.Time, DATEDIFF(millisecond, up.Time, down.Time) as miliseconds
     FROM Run r 
LEFT JOIN Jump up   ON r.RunID = up.RunID   AND (up.Type   = 1 OR up.Type = 3)
LEFT JOIN Jump down ON r.RunID = down.RunID AND (down.Type = 2 OR down.Type = 4)
WHERE up.JumpID IS NOT NULL AND down.JumpID IS NOT NULL

sqlFiddle

于 2013-08-14T05:29:14.473 回答