我一直在努力制作一组报告，以 15 分钟的增量为“团队”和“用户”提供燃烧的卡路里总和。
我使用的表如下：
IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = object_id('Teams') AND OBJECTPROPERTY(id, 'IsTable') = 1)
DROP TABLE Teams;
CREATE TABLE Teams
(
Team_ID int NOT NULL PRIMARY KEY IDENTITY (1,1),
Team_Name varchar(100),
Team_Description varchar(200)
);
IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = object_id('Users') AND OBJECTPROPERTY(id, 'IsTable') = 1)
DROP TABLE Users;
CREATE TABLE Users
(
User_ID int NOT NULL PRIMARY KEY IDENTITY (1,1),
User_Name varchar(100)
);
IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = object_id('Team_User') AND OBJECTPROPERTY(id, 'IsTable') = 1)
DROP TABLE Team_User;
CREATE TABLE Team_User
(
Team_ID int,
User_ID int
);
IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = object_id('Workouts') AND OBJECTPROPERTY(id, 'IsTable') = 1)
DROP TABLE Workouts;
CREATE TABLE Workouts
(
Workout_ID int NOT NULL PRIMARY KEY IDENTITY (1,1),
User_ID int,
Workout_Type int,
Start_Time datetime,
End_Time datetime,
Calories float
);
IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = object_id('LK_Workout_Type') AND OBJECTPROPERTY(id, 'IsTable') = 1)
DROP TABLE LK_Workout_Type;
CREATE TABLE LK_Workout_Type
(
WT_ID int NOT NULL PRIMARY KEY IDENTITY (1,1),
Workout_Name varchar (80),
Workout_Description varchar(200)
);
INSERT INTO Teams (Team_Name, Team_Description) VALUES ('A Team', 'We are not vets.');
INSERT INTO Teams (Team_Name, Team_Description) VALUES ('Team Solo', 'One man. One team.');
INSERT INTO Users (User_Name) VALUES ('Frank Appleton');
INSERT INTO Users (User_Name) VALUES ('Tim Murdock');
INSERT INTO Users (User_Name) VALUES ('Tim Smith');
INSERT INTO Team_User (Team_ID, User_ID) Values (1,1);
INSERT INTO Team_User (Team_ID, User_ID) Values (1,2);
INSERT INTO Team_User (Team_ID, User_ID) Values (2,3);
INSERT INTO LK_Workout_Type (Workout_Name, Workout_Description) VALUES ('Bike - Mountain','Trail riding.');
INSERT INTO LK_Workout_Type (Workout_Name, Workout_Description) VALUES ('Bike - Road','Road riding.');
INSERT INTO LK_Workout_Type (Workout_Name, Workout_Description) VALUES ('Elliptical','Standard elliptical');
INSERT INTO LK_Workout_Type (Workout_Name, Workout_Description) VALUES ('Running','Typical running');
INSERT INTO LK_Workout_Type (Workout_Name, Workout_Description) VALUES ('Treadmill','Treadmill running');
INSERT INTO LK_Workout_Type (Workout_Name, Workout_Description) VALUES ('Weights','Weightroom');
INSERT INTO Workouts (User_ID, Workout_Type, Start_Time, End_Time, Calories) VALUES (1,1,'3/10/2012 08:00:00 AM','3/10/2012 09:30:00 AM', 860);
INSERT INTO Workouts (User_ID, Workout_Type, Start_Time, End_Time, Calories) VALUES (2,1,'3/10/2012 08:30:00 AM','3/10/2012 10:45:00 AM', 950);
INSERT INTO Workouts (User_ID, Workout_Type, Start_Time, End_Time, Calories) VALUES (3,5,'3/10/2012 10:05:00 AM','3/10/2012 12:27:00 PM', 1917);
INSERT INTO Workouts (User_ID, Workout_Type, Start_Time, End_Time, Calories) VALUES (1,5,'3/10/2012 02:38:00 PM','3/10/2012 03:17:00 PM', 536);
我要生成的报告之一以特定的增量和时间范围显示给定团队燃烧的卡路里。因此，如果我想以 15 分钟的增量显示 A-Team 从上午 8 点到下午 6 点燃烧的卡路里，报告应如下所示：
TheDt Team Calories
08:00:00 AM A-Team 860
08： 15:00 AM A-Team 860
08:30:00 AM A-Team 1810 08:45:00 AM A-
Team 1810
09:00:00 AM A-Team 1810
09:15:00 AM A-Team 1810
09:上午 30:00 上午 A 队 1810
上午 9:45:00 上午 A 队 950
上午 10:00:00 上午 A 队 950
上午 10:15:00 上午 A 队 950
上午 10:30:00 上午 A 队 950
10:45:00 AM A-Team 950
11:00:00 AM A-Team 0
....
02:30:00 PM A-Team 0
02:45:00 PM A-Team 536
03:00:00 PM A-Team 536
03:15:00 PM A-Team 536
03:30:00 PM A-Team 0
...
06:00:00 PM A-Team 0
在我的研究中，我发现使用表格来支持增量（15 分钟）并将其加入我的锻炼表格应该会有所帮助。所以，我创建了下表：
IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = object_id('Tally') AND OBJECTPROPERTY(id, 'IsTable') = 1)
DROP TABLE Tally;
CREATE TABLE Tally
(N INT,
CONSTRAINT PK_Tally_N PRIMARY KEY CLUSTERED (N))
-----------Create and preset a loop counter
DECLARE @Counter INT
SET @Counter = 0
-----------Populate the table with 15 minute intervals between 2012 and 2017
WHILE @Counter <= 175299
BEGIN
INSERT INTO Tally (N) VALUES (@Counter) SET @Counter = @Counter + 1
END
-----------Build the CalendarDT Table
IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = object_id('CalendarDT') AND OBJECTPROPERTY(id, 'IsTable') = 1)
DROP TABLE CalendarDT;
DECLARE @StartDT DATETIME;
SELECT @StartDT = '2012-01-01T00:00:00';
SELECT DATEADD(mi,v.N*15,@StartDT) AS TheDT INTO CalendarDT FROM Tally v WHERE v.N BETWEEN 0 AND 175299;
-----------Creating a clustered index for performance
IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = object_id('IDXC_CalendarDT_TheDT') AND OBJECTPROPERTY(id, 'IsIndex') = 1)
DROP INDEX CalendarDT.IDXC_CalendarDT_TheDT;
CREATE CLUSTERED INDEX IDXC_CalendarDT_TheDT ON CalendarDT (TheDT)
GO
-----------Drop the Tally table
IF EXISTS (SELECT * FROM dbo.sysobjects WHERE id = object_id('Tally') AND OBJECTPROPERTY(id, 'IsTable') = 1)
DROP TABLE Tally;
然后，我尝试使用以下内容加入我的锻炼表：
SELECT CalendarDT.TheDT AS [Date], COALESCE(SUM(Workouts.Calories),0) AS CalorieCnt, Workouts.User_ID
FROM CalendarDT
LEFT OUTER JOIN Workouts ON Workouts.Start_Time >= '03/10/2012 08:00:00 AM' AND Workouts.End_Time < '03/10/2012 06:00:00 PM'
AND CalendarDT.TheDT >= '03/10/2012 08:00:00 AM' AND CalendarDT.TheDT <= '03/10/2012 06:00:00 PM'
WHERE Workouts.User_ID IN (SELECT User_ID FROM Team_User WHERE Team_ID = 1)
GROUP BY CalendarDT.TheDT, Workouts.User_ID
ORDER BY CalendarDT.TheDT;
这与我能够得出的解决方案一样接近。但是，我有几个问题：
1) 我还没有弄清楚如何从 JOIN 语句中加入 Team_Name。
2) CalorieCnt，即使它是由 Team_Name 而不是 User_ID 聚合的，在每个时间段显示相同的值。它没有正确汇总每个给定时间的总数，包括那些应该为 0 的时间。
我认为其中一个问题是我无法比较上午 08:45:00 燃烧了多少卡路里，因为当时没有开始/结束的锻炼。我已经看了一段时间了，我很困惑。任何帮助使这些报告适用于个人用户和团队将不胜感激！