Question

我有Diary表的这个表结构：

 CREATE TABLE Diary
(
     [IdDiary] bigint, 
     [UserId] int,
     [IdDay] numeric(18,0),
     [IsAnExtraHour] bit
);

INSERT INTO Diary ([IdDiary],  [UserId],  [IdDay], [IsAnExtraHour])
values 
(51, 1409, 1, 0),
(52, 1409, 1, 1),
(53, 1409, 3, 0),
(54, 1409, 5, 0),
(55, 1409, 5, 1),
(56, 1408, 2, 0);

这个结构为DiaryTimetable表：

CREATE TABLE DiaryTimetable
(
     [IdDiary] bigint, 
     [Hour] varchar(50)
);

  INSERT INTO DiaryTimetable ([IdDiary], [Hour])
VALUES
    (51, '09:00'),
    (51, '09:30'),
    (51, '10:00'),
    (51, '10:30'),
    (51, '11:00'),
    (52, '15:00'),
    (52, '15:30'),
    (52, '16:00'),
    (52, '16:30'),
    (52, '17:00'),
    (53, '11:00'),
    (53, '11:30'),
    (53, '12:00'),
    (53, '12:30'),
    (53, '13:00'),
    (54, '10:00'),
    (54, '10:30'),
    (54, '11:00'),
    (54, '11:30'),
    (54, '12:00'),
    (55, '16:00'),
    (55, '16:30'),
    (55, '17:00'),
    (55, '17:30'),
    (55, '18:00'),
    (56, '15:00'),
    (56, '15:30'),
    (56, '16:00'),
    (56, '16:30'),
    (56, '17:00');

我使用此查询获取用户ID 1409的最大小时和最小时数，以获取每天输入的时间和离开工作的时间。 idday与星期几的数字相对应。例如1是星期一，2是星期二等...

 SELECT d.IdDiary, d.IdDay, MIN(Hour) as 'Start Time', MAX(Hour) as 'End Time', IsAnExtraHour
FROM Diary AS d
LEFT JOIN DiaryTimetable AS dt ON d.IdDiary = dt.IdDiary
where userid = 1409
GROUP BY d.IdDiary, d.IdDay, IsAnExtraHour

此查询提供此结果：

我想得到这个结果：

    Day       Start Time    End Time    Start Extra Time    End Extra Time
    -----     ----------    --------    ---------------     ---------------
   Monday       09:00         11:00        15:00                17:00
   Wednessday   11:00         13:00        
   Friday       10:00         12:00        16:00                18:00

我有一个列（IsAnExtraHour）此列表示此行是否在一天中有额外的小时数，例如员工在星期一09:00到11:00开始工作，然后在下午15:00再次工作到了17:00，所以我想知道如何将这个小时分组在同一行，我希望我能够清楚地表达，我接受建议表示感谢。

Answer 1

SELECT  d.IdDay,
        MIN(CASE WHEN isAnExtraHour = 0 THEN hour END) as 'Start Time',
        MAX(CASE WHEN isAnExtraHour = 0 THEN hour END) as 'End Time',
        MIN(CASE WHEN isAnExtraHour = 1 THEN hour END) as 'Start Extra Time',
        MAX(CASE WHEN isAnExtraHour = 1 THEN hour END) as 'End Extra Time'
FROM    Diary AS d
LEFT JOIN
        DiaryTimetable AS dt
ON      dt.IdDiary = d.IdDiary
WHERE   userid = 1409
GROUP BY
        d.IdDay

Answer 2

我使用了来自@Quassnoi的代码，我添加了这个：

SELECT DATENAME(weekday, d.idday-1) as 'Day' ,
       MIN(CASE WHEN isAnExtraHour = 0 THEN hour END) AS 'Start Time',
       MAX(CASE WHEN isAnExtraHour = 0 THEN hour END) AS 'End Time',
       MIN(CASE WHEN isAnExtraHour = 1 THEN hour END) AS 'Start Extra Time',
       MAX(CASE WHEN isAnExtraHour = 1 THEN hour END) AS 'End Extra Time'
FROM Diary AS d
LEFT JOIN DiaryTimetable AS dt ON dt.IdDiary = d.IdDiary
WHERE userid = 1409
GROUP BY d.IdDay

我希望这能帮到别人，谢谢大家的回答。

Answer 3

我接近这个的方法是分别计算你的标准和额外时间，就像这样;

SELECT d.IdDay
    ,MIN(dt.StartTime) AS 'Start Time'
    ,MAX(dt.EndTime) AS 'End Time'
    ,MIN(ex.StartTime) AS 'Start Extra Time'
    ,MAX(ex.EndTime) AS 'End Extra Time'
FROM Diary AS d
LEFT JOIN (
    SELECT IdDiary
        ,MIN(Hour) AS StartTime
        ,MAX(Hour) AS EndTime
    FROM DiaryTimetable
    GROUP BY IdDiary
    ) AS dt ON d.IdDiary = dt.IdDiary
    AND d.IsAnExtraHour = 0
LEFT JOIN (
    SELECT IdDiary
        ,MIN(Hour) AS StartTime
        ,MAX(Hour) AS EndTime
    FROM DiaryTimetable
    GROUP BY IdDiary
    ) AS ex ON d.IdDiary = ex.IdDiary
    AND d.IsAnExtraHour = 1
WHERE userid = 1409
GROUP BY d.IdDay

Answer 4

您可以先获得非额外时间，然后通过UserId和IdDay将加入时间加入他们。像这样：

SELECT
    CASE BaseHours.IdDay
        WHEN 1 THEN 'Monday' 
        WHEN 2 THEN 'Tuesday' 
        WHEN 3 THEN 'Wednesday' 
        WHEN 4 THEN 'Thursday' 
        WHEN 5 THEN 'Friday' 
        WHEN 6 THEN 'Saturday' 
        WHEN 7 THEN 'Sunday' 
    END AS [WeekDay],
    MIN(BaseTimeTable.Hour) as 'Start Time',
    MAX(BaseTimeTable.Hour) as 'End Time',
    MIN(ExtraTimeTable.Hour) as 'Start Extra Time',
    MAX(ExtraTimeTable.Hour) as 'End Extra Time'
FROM Diary AS BaseHours
LEFT JOIN Diary ExtraHours
    ON ExtraHours.UserId = BaseHours.UserId
        AND ExtraHours.IdDay = BaseHours.IdDay AND ExtraHours.IsAnExtraHour = 1
JOIN DiaryTimetable AS BaseTimeTable
    ON BaseHours.IdDiary = BaseTimeTable.IdDiary
LEFT JOIN DiaryTimetable AS ExtraTimeTable
    ON ExtraHours.IdDiary = ExtraTimeTable.IdDiary
WHERE BaseHours.Userid = 1409 AND BaseHours.IsAnExtraHour = 0
GROUP BY BaseHours.IdDay

如何使用SQL Server在此查询中按天分组结果？

4 个答案: