我有以下三个表
表HrShift：
Id ShiftName DaysOfWeek StartTime EndTime StartDate EndDate
1 Day Shift-1 Sunday,Monday,Tuesday,Wednesday,Thursday,Friday 09:00 AM 06:00 PM 2016-01-01 NULL
2 Day Shift-2 Sunday,Monday,Tuesday,Wednesday,Thursday,Friday 10:00 AM 07:00 PM 2010-01-01 NULL
3 Day Shift-3 Sunday,Monday,Tuesday,Wednesday,Thursday,Friday 11:00 AM 08:00 PM 2010-01-01 NULL
表ShiftType：
Id Name
1 Primary
2 Roster
表EmployeeShifts：
Id EmpId HrShiftId ShiftTypeId StartDate EndDate
1 1 1 1 2018-01-01 NULL
2 1 2 2 2018-02-01 2018-02-01
3 2 1 1 2018-01-01 NULL
4 2 2 2 2018-02-01 2018-02-01
5 2 3 2 2018-02-01 2018-02-01
创建表命令：
CREATE TABLE [HrShifts](
[Id] [int] IDENTITY(1,1) NOT NULL,
[ShiftName] [nvarchar](max) NULL,
[DaysOfWeek] [nvarchar](max) NULL,
[StartTime] [nvarchar](max) NULL,
[EndTime] [nvarchar](max) NULL,
[StartDate] [datetime] NOT NULL,
[EndDate] [datetime] NULL);
CREATE TABLE [ShiftType](
[Id] [int] IDENTITY(1,1) NOT NULL,
[Name] [nvarchar](max) NULL);
CREATE TABLE [EmployeeShifts](
[Id] [int] IDENTITY(1,1) NOT NULL,
[EmpId] [int] NOT NULL,
[HrShiftId] [int] NOT NULL,
[ShiftTypeId] [int] NOT NULL,
[StartDate] [datetime] NOT NULL,
[EndDate] [datetime] NULL);
我需要找到两个日期之间的每个雇员单个分配移。 ShiftType花名册的优先级高于Primary。需要检查在HrShift表DaysOfWeek列具有由天名的日期相匹配。
（2018年1月31日2018年2月2日和）之间预期的结果是以下
Date EmpId ShiftType HrShiftId ShiftName StartTime EndTime
2018-01-31 1 1 1 Day Shift-1 09:00 AM 06:00 PM
2018-02-01 1 2 2 Day Shift-2 10:00 AM 07:00 PM
2018-02-02 1 1 1 Day Shift-1 09:00 AM 06:00 PM
2018-01-31 2 1 1 Day Shift-1 09:00 AM 06:00 PM
2018-02-01 2 2 2 Day Shift-2 10:00 AM 07:00 PM
2018-02-02 2 2 3 Day Shift-3 11:00 AM 08:00 PM
答案 0 :(得分：1)
首先，您需要生成日期。为此，您可以使用递归CTE（或日历表）或类似方法。
new_item2.pdf我认为with days as (
select convert(date, '2018-01-31') as dte
union all
select dateadd(day, 1, dte)
from days
where dte < '2018-02-02'
)
select d.dte, es.*, hs.startTime, hs.endTime
from EmployeeShifts es join
HrShift hs
on es.HrShiftId = hs.id cross join
days d
where d.dte >= hs.startDate and
(d.dte < hs.endDate or hs.endDate is null) and
hs.daysofweek like '%' + datename(weekday, d.dte) + '%';
子句涵盖了您想要的日期和时间表之间的所有匹配逻辑。
答案 1 :(得分：0)
我更改了一些数据值以向您显示不同的结果： 用您的临时变量名更改。
在这里我首先输入日期列表@S_Date和@E_Date是输入：
DECLARE @S_Date AS DATETIME
DECLARE @E_Date AS DATETIME
DECLARE @TotalDays AS INT
DECLARE @DisplayDate AS VARCHAR(50)
DECLARE @WDN AS INT
DECLARE @WDName AS VARCHAR(20)
SET @S_Date =CONVERT(datetime,'01/31/2019')
SET @E_Date =CONVERT(datetime,'02/02/2019')
SET @WDN = DATEPART(WEEKDAY,@S_Date)
SET @WDName = DATENAME(weekday,@S_Date)
SET @TotalDays = DATEDIFF(dd,@S_Date, DATEADD(dd,1,@E_Date))
SET @DisplayDate = DATENAME(weekday, @S_Date)+' ' + DATENAME(dd,@S_Date)+' '+ DATENAME(m, @S_Date)+' '+ DATENAME(yy, @S_Date)
CREATE TABLE #Monthdaytable(
[ID] [int] IDENTITY(1,1) NOT NULL,
[DisplayDate] [varchar](50) NULL,
[Actualdate] [datetime] NULL,
[Week_Day_Number] INT NULL,
[Week_Day_Name] VARCHAR(20) NULL
) ON [PRIMARY]
DECLARE @i AS INT
SET @i = 1
WHILE(@i<=@TotalDays)
BEGIN
INSERT INTO #Monthdaytable
( DisplayDate, ActualDate ,Week_Day_Number, Week_Day_Name)
VALUES (@DisplayDate, @S_Date, @WDN, @WDName)
SET @S_Date = DATEADD(dd,1,@S_Date)
SET @WDN = DATEPART(WEEKDAY,@S_Date)
SET @WDName = DATENAME(weekday,@S_Date)
SET @DisplayDate =DATENAME(weekday, @S_Date)+' ' + DATENAME(dd,@S_Date)+' '+ DATENAME(m, @S_Date)+' '+ DATENAME(yy, @S_Date)
SET @i = @i+1
END
只需您的桌子：
CREATE TABLE #HrShift (Id int, ShiftName varchar(50), DaysOfWeek varchar(500),StartTime time(7),EndTime time(7), StartDate datetime, EndDate datetime)
INSERT INTO #HrShift ( Id, ShiftName, DaysOfWeek, StartTime, EndTime, StartDate, EndDate) VALUES (1, 'Day Shift-1', 'Sunday,Monday,Tuesday,Wednesday,Thursday,Friday' , '09:00 AM' , '06:00 PM', '2016-01-01' , NULL)
INSERT INTO #HrShift ( Id, ShiftName, DaysOfWeek, StartTime, EndTime, StartDate, EndDate) VALUES (2, 'Day Shift-2' , 'Sunday,Monday,Tuesday,Wednesday,Thursday' , '10:00 AM' , '07:00 PM' , '2010-01-01' , NULL)
INSERT INTO #HrShift ( Id, ShiftName, DaysOfWeek, StartTime, EndTime, StartDate, EndDate) VALUES (3, 'Day Shift-3' , 'Sunday,Monday,Tuesday,Wednesday,Thursday' , '11:00 AM' , '08:00 PM' , '2010-01-01' , NULL)
CREATE TABLE #ShiftType (Id int, Name varchar(50))
INSERT INTO #ShiftType(Id, Name) VALUES (1, 'Primary')
INSERT INTO #ShiftType(Id, Name) VALUES (2, 'Roster')
CREATE TABLE #EmployeeShifts (Id int, EmpId int, HrShiftId int, ShiftTypeId int, StartDate datetime, EndDate datetime)
INSERT INTO #EmployeeShifts(Id, EmpId, HrShiftId, ShiftTypeId, StartDate, EndDate ) VALUES(1, 1, 1, 1, '2018-01-01', NULL )
INSERT INTO #EmployeeShifts(Id, EmpId, HrShiftId, ShiftTypeId, StartDate, EndDate ) VALUES(2, 1, 2, 2, '2018-02-01', '2018-02-01')
INSERT INTO #EmployeeShifts(Id, EmpId, HrShiftId, ShiftTypeId, StartDate, EndDate ) VALUES(3, 2, 1, 1, '2018-01-01', NULL)
INSERT INTO #EmployeeShifts(Id, EmpId, HrShiftId, ShiftTypeId, StartDate, EndDate ) VALUES(4, 2, 2, 2, '2018-02-01', '2019-02-05')
INSERT INTO #EmployeeShifts(Id, EmpId, HrShiftId, ShiftTypeId, StartDate, EndDate ) VALUES(5, 2, 3, 2, '2018-02-01', '2019-02-01')
SELECT * FROM #Monthdaytable
--SELECT * FROM #HrShift
--SELECT * FROM #ShiftType
--SELECT * FROM #EmployeeShifts
这是您需要的查询：
SELECT m.DisplayDate ,EmpId,ShiftName,t.Name,StartTime,EndTime
FROM #EmployeeShifts e INNER JOIN
#ShiftType t ON e.ShiftTypeId = t.Id INNER JOIN
#HrShift s ON s.Id = e.HrShiftId INNER JOIN
#Monthdaytable m ON 1 = 1
WHERE CONVERT(varchar,m.Actualdate,112)>=CONVERT(varchar,e.StartDate,112)
and CONVERT(varchar,m.Actualdate,112)<=CONVERT(varchar,ISNULL(e.EndDate, m.Actualdate),112)
and s.DaysOfWeek LIKE '%'+m.Week_Day_Name+'%'
降低温度
DROP TABLE #EmployeeShifts
DROP TABLE #ShiftType
DROP TABLE #HrShift
DROP TABLE #Monthdaytable