需要SQL查询的帮助吗

我有以下资料：

TransactionType Lane TransactionDate ------------------------------------------------ Sale 17 2011-07-21 06:15:34 SignOn 18 2011-07-21 07:00:00 Sale 18 2011-07-21 07:06:43 SignOn 20 2011-07-21 08:01:12 Sale 18 2011-07-21 07:30:00 Sale 18 2011-07-21 08:30:00 Sale 18 2011-07-21 09:30:50 Sale 20 2011-07-21 10:15:34 SignOff 18 2011-07-21 19:00:00 SignOff 20 2011-07-21 19:10:52 TransactionType Lane TransactionDate ------------------------------------------------ 销售17 2011-07-2106:15:34 签名18 2011-07-21 07:00:00 销售18 2011-07-21 07:06:43 签名20 2011-07-21 08:01:12 销售18 2011-07-21 07:30:00 销售18 2011-07-21 08:30:00 销售18 2011-07-21 09:30:50 销售20 2011-07-21 10:15:34 签字18 2011-07-21 19:00:00 签字20 2011-07-21 19:10:52 我需要获得以下信息：

介于签入和签出交易类型之间的

lane

计数

每个

车道

处于登录状态的总时间，例如带有

车道

编号18的行为12小时，带有

车道

20的行为11小时9分40秒

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以下内容不适用于每条车道的多个登录-注销事件，但至少是一个开始。 如果我有关于每天允许多少登录注销事件和/或其他限制的信息，我将尝试调整它，使其在一般情况下工作

1.位于登录和注销交易类型之间的通道计数

2.每条车道处于信号状态的总时间，例如，车道号为18的世界其他地区为12小时，车道号为20的世界其他地区为11小时9分40秒

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这将得到它的大部分。。。包括每个通道的多个登录/注销以及每个登录/注销时间段内的交易数量。一旦您得到这个结果，您就可以从中进行查询，以获得具有任何汇总值的活动车道/会话的总计数。。。例如，第18条通道的总签入/签出时间、总销售交易记录，或者仅仅是总的开放通道数量以及此类销售活动的占比

由于group by在通道上，signon/off，所以我只对小时、分钟、秒应用了MIN（），这在每个signon/off会话中始终是一个常量

SELECT 
      PreQuery.Lane,
      PreQuery.SignedOn,
      PreQuery.SignedOff,
      MIN( datediff(hour, PreQuery.SignedOn, PreQuery.SignedOff )) as hours,
      MIN( datediff(minute, PreQuery.SignedOn, PreQuery.SignedOff )) as minutes,
      MIN( datediff(second, PreQuery.SignedOn, PreQuery.SignedOff )) as seconds,
      COUNT(*) as NumOfSales 
   from 
      ( SELECT 
              T1.Lane,
              T1.TransactionDate SignedOn,
              MIN( T2.TransactionDate ) as SignedOff
           from 
              Trans1 T1
                 LEFT JOIN Trans1 T2
                    ON T1.Lane = T2.Lane
                    AND T2.TransactionType = "SignOff"
                    AND T2.TransactionDate > T1.TransactionDate 
           where 
              T1.TransactionType = "SignOn" 
           group by 
              T1.Lane,
              T1.TransactionDate ) PreQuery 
      LEFT Join Trans1 T3 
         on PreQuery.Lane = T3.Lane 
        AND T3.TransactionType = "Sale" 
        AND T3.TransactionDate BETWEEN PreQuery.SignedOn AND PreQuery.SignedOff
   GROUP BY 
      PreQuery.Lane,
      PreQuery.SignedOn,
      PreQuery.SignedOff

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这是家庭作业吗？不，这不是家庭作业，你试图解决什么问题？你的服务器是什么？通道SQL小姐？MYSQL？此查询必须是一个或两个不同的查询？输入参数是什么？我想他指的是每个Lanethan的销售额。谢谢你的回复，你的解决方案确实帮了我的忙！

SELECT      signon.lane,
            datediff(hour, signon.transactiondate, signoff.transactiondate) as hours,
            datediff(minute, signon.transactiondate, signoff.transactiondate) as minutes,
            datediff(second, signon.transactiondate, signoff.transactiondate) as seconds,

FROM        table1 signon
INNER JOIN  table1 signoff 
        ON    (signoff.lane = signon.lane 
              AND signoff.transactiondate > signon.transactiondate
              AND signoff.transactiontype = 'SignOff')
WHERE       signon.transactiontype = 'SignOn'                               
GROUP BY    signon.lane, signon.transactiondate

SELECT 
      PreQuery.Lane,
      PreQuery.SignedOn,
      PreQuery.SignedOff,
      MIN( datediff(hour, PreQuery.SignedOn, PreQuery.SignedOff )) as hours,
      MIN( datediff(minute, PreQuery.SignedOn, PreQuery.SignedOff )) as minutes,
      MIN( datediff(second, PreQuery.SignedOn, PreQuery.SignedOff )) as seconds,
      COUNT(*) as NumOfSales 
   from 
      ( SELECT 
              T1.Lane,
              T1.TransactionDate SignedOn,
              MIN( T2.TransactionDate ) as SignedOff
           from 
              Trans1 T1
                 LEFT JOIN Trans1 T2
                    ON T1.Lane = T2.Lane
                    AND T2.TransactionType = "SignOff"
                    AND T2.TransactionDate > T1.TransactionDate 
           where 
              T1.TransactionType = "SignOn" 
           group by 
              T1.Lane,
              T1.TransactionDate ) PreQuery 
      LEFT Join Trans1 T3 
         on PreQuery.Lane = T3.Lane 
        AND T3.TransactionType = "Sale" 
        AND T3.TransactionDate BETWEEN PreQuery.SignedOn AND PreQuery.SignedOff
   GROUP BY 
      PreQuery.Lane,
      PreQuery.SignedOn,
      PreQuery.SignedOff