MS SQL、子查询和 EXISTS 错误

Question

我有一个 MS SQL 2012 数据库 table 有 6 列

ID
JobDate DATETIME
DriverID INT
JobNUmber NVARCHAR(20)
JobStart TIME
JobEnd TIME

我正在尝试生成一个查询，该查询将为每个 driver 的每一天提供一行，其中包括日期、JobNumbers 的计数、最早的 JobStart 和最新的 JobEnd（这部分很简单）然后是总小时数和总分钟数以及总分钟数。第二部分我只有在每个特定的日子和 driver 分开工作时才能开始工作。（哎呀！）

我收到错误消息“当子查询未使用 EXISTS 引入时，只能在 select 列表中指定一个表达式。

这就是我正在努力完成的工作。

DECLARE @mnth NVARCHAR(20) = 'Jan-16'
DECLARE @FROM NVARCHAR(20) = '2015-12-28'
DECLARE @TO NVARCHAR(20) = '2016-01-31'

SELECT @mnth AS 'Month',
x.DriverID As 'Driver',
DAY(x.JobDate) AS 'Day' ,
COUNT(x.JobNumber) AS 'Stops',
MIN(x.JobStart) AS 'Start',
MAX(x.JobEnd) AS 'End',
(SELECT
    SUM(hrs) AS 'Hours', SUM(mins) AS 'Minutes', SUM(ABS(hrs * 60) + (ABS(mins))) AS 'Total Minutes'
    FROM
    ( SELECT
        ABS(SUM(E_hrs - S_hrs)) AS hrs,
        ABS(SUM(E_mins - S_mins)) AS mins
        FROM
            (SELECT
                DATEPART(HOUR,MIN(j.JobEnd)) AS E_hrs,
                DATEPART(HOUR,MAX(j.JobStart)) AS S_hrs,
                DATEPART(MINUTE,MAX(j.JobEnd)) AS E_mins,
                DATEPART(MINUTE,MIN(j.JobStart)) AS S_mins
                FROM Xora_Job_Time j
                WHERE j.JobDate = x.JobDate
                AND j.DriverID = x.DriverID
            ) a
        ) b
) c
FROM Xora_Job_Time x
WHERE x.JobDate >= @FROM
AND x.JobDate <= @TO
GROUP BY DriverID, DAY(JobDate), JobDate
ORDER BY DriverID, DAY(JobDate)

这部分效果很好！

DECLARE @mnth NVARCHAR(20) = 'Jan-16'
DECLARE @FROM NVARCHAR(20) = '2015-12-28'
DECLARE @TO NVARCHAR(20) = '2016-01-31'

SELECT @mnth AS 'Month',
x.DriverID As 'Driver',
DAY(x.JobDate) AS 'Day' ,
COUNT(x.JobNumber) AS 'Stops',
MIN(x.JobStart) AS 'Start',
MAX(x.JobEnd) AS 'End'
FROM Xora_Job_Time x
WHERE x.JobDate >= @FROM
AND x.JobDate <= @TO
GROUP BY DriverID, DAY(JobDate)
ORDER BY DriverID, DAY(JobDate)

并为我提供了我正在寻找的信息，但尝试添加时间计数导致此操作失败并出现 EXISTS 错误。

这行得通，但我每天都需要自己做 driver....

SELECT SUM(hrs)AS 'Hours', SUM(mins) AS 'Minutes', SUM(ABS(hrs * 60) + (ABS(mins))) AS 'Total Minutes'
FROM
( SELECT
    ABS(SUM(E_hrs - S_hrs)) AS hrs,
    ABS(SUM(E_mins - S_mins)) AS mins
    FROM
        (SELECT
            DATEPART(HOUR,MIN(JobEnd)) AS E_hrs,
            DATEPART(HOUR,MAX(JobStart)) AS S_hrs,
            DATEPART(MINUTE,MAX(JobEnd)) AS E_mins,
            DATEPART(MINUTE,MIN(JobStart)) AS S_mins
            FROM Xora_Job_Time
            WHERE JobDate = '2016-01-06'
            AND DriverID = '3') a
    ) b

我得到的错误是带有 EXIST 的子查询，我看不到我需要 EXIST 子句的地方，更不用说它有帮助的地方了。

尽管如此，在此先感谢！

Answer 1

您不能在 SELECT 列表的子 select 中有多个记录。我想你要找的是 CROSS APPLY:

Declare @Mnth NVarchar(20) = 'Jan-16';
Declare @From NVarchar(20) = '2015-12-28';
Declare @To NVarchar(20) = '2016-01-31';

Select  @Mnth As 'Month'
      , x.DriverID As 'Driver'
      , Day(x.JobDate) As 'Day'
      , Count(x.JobNumber) As 'Stops'
      , Min(x.JobStart) As 'Start'
      , Max(x.JobEnd) As 'End'
      , c.Hours
      , c.Minutes
      , c.[Total Minutes]
From    Xora_Job_Time x
Cross Apply (Select Sum(b.hrs) As 'Hours'
                  , Sum(b.mins) As 'Minutes'
                  , Sum(Abs(b.hrs * 60) + (Abs(b.mins))) As 'Total Minutes'
             From   (Select Abs(Sum(a.E_hrs - a.S_hrs)) As hrs
                          , Abs(Sum(a.E_mins - a.S_mins)) As mins
                     From   (Select DatePart(Hour, Min(j.JobEnd)) As E_hrs
                                  , DatePart(Hour, Max(j.JobStart)) As S_hrs
                                  , DatePart(Minute, Max(j.JobEnd)) As E_mins
                                  , DatePart(Minute, Min(j.JobStart)) As S_mins
                             From   Xora_Job_Time j
                             Where  j.JobDate = x.JobDate
                                    And j.DriverID = x.DriverID
                            ) a
                    ) b
            ) c
Where   x.JobDate >= @From
        And x.JobDate <= @To
Group By DriverID
      , Day(JobDate)
      , JobDate
Order By DriverID
      , Day(JobDate);

A CROSS APPLY 将对每条记录执行内部子查询，其结果可以被 SELECT.

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MS SQL、子查询和 EXISTS 错误

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