我有3个表,其中包含我想要结合的事件日期以及时间表.我不确定实现我需要的最佳方式,并希望得到一些帮助.
我的第一张表是员工表.它包含四列
EmployeeId, HiredDate, CommencedDate, ResignDate, and FinishDate.
雇用员工时,他们会在表中使用EmployeeId和HiredDate列获取记录.该表在需要时不断更新.
CREATE TABLE Employees (EmployeeId INT NOT NULL, HiredDate DATE NOT NULL, CommencedDate DATE NULL, ResignDate DATE NULL, FinishDate DATE NULL)
Insert Employees Values (111, '2012-01-02', '2012-01-05', '2012-03-15', '2012-04-06')
Insert Employees Values (112, '2012-01-05', '2012-01-10', NULL, NULL)
第二个表名为ReportingCycles,其中包含
reportingCycleId,startDate和endDate列.报告周期中的天数各不相同.
CREATE TABLE ReportingCycles (reportingCycleId INT NOT NULL, startDate DATE NOT NULL, endDate DATE NOT NULL)
INSERT ReportingCycles Values (1,'2011-12-03','2011-12-31')
INSERT ReportingCycles Values (2,'2012-01-01','2012-01-30')
INSERT ReportingCycles Values (3,'2012-01-31','2012-02-27')
INSERT ReportingCycles Values (4,'2012-02-28','2012-04-02')
INSERT ReportingCycles Values (5,'2012-04-03','2012-04-28')
INSERT ReportingCycles Values (6,'2012-04-29','2012-05-28')
INSERT ReportingCycles Values (7,'2012-05-29','2012-07-01')
INSERT ReportingCycles Values (8,'2012-07-02','2012-08-01')
INSERT ReportingCycles Values (9,'2012-08-02','2012-08-28')
INSERT ReportingCycles Values (10,'2012-08-29','2012-09-29')
INSERT ReportingCycles Values (11,'2012-09-30','2012-10-28')
INSERT ReportingCycles Values (12,'2012-10-29','2012-11-26')
INSERT ReportingCycles Values (13,'2012-11-27','2012-12-26')
INSERT ReportingCycles Values (14,'2012-12-27','2013-01-21')
INSERT ReportingCycles Values (15,'2013-01-22','2013-02-21')
我的第三个表称为职责,每个员工在某些日期显示员工的位置.如果员工已经被雇用但尚未开始,则会在虚拟地点填充.员工也可能在一个日期范围内的多个位置,因此也给出了一个分配值.对于单个员工,日期范围的分配值将始终为1.
CREATE TABLE Duties (EmployeeId INT NOT NULL, LocationId INT NOT NULL, AssignmentStartDate DATE NOT NULL, AssignmentEndDate DATE NULL, AssignmentValue Decimal(18,2) NOT NULL)
INSERT Duties Values (111, 0, '2012-01-02', '2012-01-04', 1.00)
INSERT Duties Values (111, 25, '2012-01-05', '2012-01-10', 1.00)
INSERT Duties Values (111, 30, '2012-01-11', '2012-04-06', 0.25)
INSERT Duties Values (111, 31, '2012-01-11', '2012-04-06', 0.25)
INSERT Duties Values (111, 32, '2012-01-11', '2012-04-06', 0.25)
INSERT Duties Values (111, 33, '2012-01-11', '2012-04-06', 0.25)
INSERT Duties Values (112, 0, '2012-01-05', '2012-01-09', 1)
INSERT Duties Values (112, 70, '2012-01-10', NULL, 1)
现在,我想要做的是将所有这些表连接在一起,最后得到每个员工的时间表.结果表将包含以下列：
CREATE TABLE EmployeeTimelime (
fromDate DATE NOT NULL,
toDate DATE NOT NULL,
reportingCycleId INT NOT NULL,
employeeId INT NOT NULL,
LocationId INT NOT NULL,
AssignmentValue Decimal(18,2),
Hired INT NOT NULL,
Commenced INT NOT NULL,
Resigned INT NOT NULL,
Finished Int NOT NULL,
startCycle INT NOT NULL,
endCycle INT NOT NULL)
Hired,Commenced,Resigned,Finished,startCycle和endCycle列包含0或1值,显示它是什么类型的记录.
对于员工111,表格如下所示：
Insert EmployeeTimelime Values ('2012-01-02','2012-01-04',2,111,0,1,1,0,0,0,0,0)
Insert EmployeeTimelime Values ('2012-01-05','2012-01-10',2,111,25,1,0,1,0,0,0,0)
Insert EmployeeTimelime Values ('2012-01-11','2012-01-30',2,111,30,0.25,0,0,0,0,0,1)
Insert EmployeeTimelime Values ('2012-01-11','2012-01-30',2,111,31,0.25,0,0,0,0,0,1)
Insert EmployeeTimelime Values ('2012-01-11','2012-01-30',2,111,32,0.25,0,0,0,0,0,1)
Insert EmployeeTimelime Values ('2012-01-11','2012-01-30',2,111,33,0.25,0,0,0,0,0,1)
Insert EmployeeTimelime Values ('2012-01-31','2012-02-27',3,111,30,0.25,0,0,0,0,1,1)
Insert EmployeeTimelime Values ('2012-01-31','2012-02-27',3,111,31,0.25,0,0,0,0,1,1)
Insert EmployeeTimelime Values ('2012-01-31','2012-02-27',3,111,32,0.25,0,0,0,0,1,1)
Insert EmployeeTimelime Values ('2012-01-31','2012-02-27',3,111,33,0.25,0,0,0,0,1,1)
Insert EmployeeTimelime Values ('2012-02-28','2012-03-14',4,111,30,0.25,0,0,0,0,1,0)
Insert EmployeeTimelime Values ('2012-02-28','2012-03-14',4,111,31,0.25,0,0,0,0,1,0)
Insert EmployeeTimelime Values ('2012-02-28','2012-03-14',4,111,32,0.25,0,0,0,0,1,0)
Insert EmployeeTimelime Values ('2012-02-28','2012-03-14',4,111,33,0.25,0,0,0,0,1,0)
Insert EmployeeTimelime Values ('2012-03-15','2012-04-02',4,111,30,0.25,0,0,1,0,0,1)
Insert EmployeeTimelime Values ('2012-03-15','2012-04-02',4,111,31,0.25,0,0,1,0,0,1)
Insert EmployeeTimelime Values ('2012-03-15','2012-04-02',4,111,32,0.25,0,0,1,0,0,1)
Insert EmployeeTimelime Values ('2012-03-15','2012-04-02',4,111,33,0.25,0,0,1,0,0,1)
Insert EmployeeTimelime Values ('2012-04-03','2012-04-05',5,111,30,0.25,0,0,0,0,1,0)
Insert EmployeeTimelime Values ('2012-04-03','2012-04-05',5,111,31,0.25,0,0,0,0,1,0)
Insert EmployeeTimelime Values ('2012-04-03','2012-04-05',5,111,32,0.25,0,0,0,0,1,0)
Insert EmployeeTimelime Values ('2012-04-03','2012-04-05',5,111,33,0.25,0,0,0,0,1,0)
Insert EmployeeTimelime Values ('2012-04-06','2012-04-06',5,111,30,0.25,0,0,0,1,0,0)
Insert EmployeeTimelime Values ('2012-04-06','2012-04-06',5,111,31,0.25,0,0,0,1,0,0)
Insert EmployeeTimelime Values ('2012-04-06','2012-04-06',5,111,32,0.25,0,0,0,1,0,0)
Insert EmployeeTimelime Values ('2012-04-06','2012-04-06',5,111,33,0.25,0,0,0,1,0,0)
我从这个查询开始,但它不正确：
SELECT *
FROM Employees x
Join ReportingCycles y
on (y.startDate between x.HiredDate and Coalesce(x.FinishDate, '9999-12-31')
or y.endDate between x.HiredDate and Coalesce(x.FinishDate, '9999-12-31') )
Left Join Duties z
on z.EmployeeId = x.EmployeeId
and (z.AssignmentStartDate between y.startDate and y.endDate
or Coalesce(z.AssignmentEndDate, '9999-12-31') between y.startDate and y.endDate
)
Order by x.EmployeeId, y.reportingCycleId
感谢任何能提供帮助的人.
最佳答案
---------------------------------------------------
-- Preparation of Data
---------------------------------------------------
DECLARE @EmployeeTimelime table (
fromDate DATE NOT NULL,
toDate DATE NOT NULL,
reportingCycleId INT NOT NULL,
employeeId INT NOT NULL,
LocationId INT NOT NULL,
AssignmentValue Decimal(18,2),
-- Should be using bit data type for boolean values
Hired INT NOT NULL,
Commenced INT NOT NULL,
Resigned INT NOT NULL,
Finished Int NOT NULL,
startCycle INT NOT NULL,
endCycle INT NOT NULL
)
DECLARE @Employees table (employeeId INT NOT NULL, HiredDate DATE NOT NULL, CommencedDate DATE NULL, ResignDate DATE NULL, FinishDate DATE NULL)
INSERT @Employees Values
(111, '2012-01-02', '2012-01-05', '2012-03-15', '2012-04-06')
,(112, '2012-01-05', '2012-01-10', NULL, NULL)
DECLARE @ReportingCycles table (reportingCycleId INT NOT NULL, startDate DATE NOT NULL, endDate DATE NOT NULL)
INSERT @ReportingCycles Values
(1,'2011-12-03','2011-12-31')
,(2,'2012-01-01','2012-01-30')
,(3,'2012-01-31','2012-02-27')
,(4,'2012-02-28','2012-04-02')
,(5,'2012-04-03','2012-04-28')
,(6,'2012-04-29','2012-05-28')
,(7,'2012-05-29','2012-07-01')
,(8,'2012-07-02','2012-08-01')
,(9,'2012-08-02','2012-08-28')
,(10,'2012-08-29','2012-09-29')
,(11,'2012-09-30','2012-10-28')
,(12,'2012-10-29','2012-11-26')
,(13,'2012-11-27','2012-12-26')
,(14,'2012-12-27','2013-01-21')
,(15,'2013-01-22','2013-02-21')
DECLARE @Duties table (EmployeeId INT NOT NULL, LocationId INT NOT NULL, AssignmentStartDate DATE NOT NULL, AssignmentEndDate DATE NULL, AssignmentValue Decimal(18,2) NOT NULL)
INSERT @Duties Values
(111, 0, '2012-01-02', '2012-01-04', 1.00)
,(111, 25, '2012-01-05', '2012-01-10', 1.00)
,(111, 30, '2012-01-11', '2012-04-06', 0.25)
,(111, 31, '2012-01-11', '2012-04-06', 0.25)
,(111, 32, '2012-01-11', '2012-04-06', 0.25)
,(111, 33, '2012-01-11', '2012-04-06', 0.25)
,(112, 0, '2012-01-05', '2012-01-09', 1)
,(112, 70, '2012-01-10', NULL, 1)
---------------------------------------------------
-- The logic lays below
---------------------------------------------------
;WITH dates(Value, EndDate) AS -- tally table of dates
(
SELECT MIN(HiredDate), MAX(ISNULL(ResignDate, GETDATE())) FROM @Employees
UNION ALL
SELECT DATEADD(DAY, 1, Value), EndDate FROM dates WHERE DATEADD(DAY, 1, Value) <= EndDate
), data AS -- Prepare the non-grouped data, with well declared relations
(
SELECT
d.Value, e.employeeId, rc.reportingCycleId, du.LocationId, du.AssignmentValue,
CASE WHEN e.HiredDate = d.Value THEN 1 ELSE 0 END AS HiredFlag,
CASE WHEN e.CommencedDate = d.Value THEN 1 ELSE 0 END AS CommencedFlag,
CASE WHEN e.ResignDate >= d.Value THEN 1 ELSE 0 END AS ResignFlag,
CASE WHEN e.FinishDate = d.Value THEN 1 ELSE 0 END AS FinishFlag,
CASE WHEN rc.startDate = d.Value THEN 1 ELSE 0 END AS CycleStartFlag,
CASE WHEN rc.endDate = d.Value THEN 1 ELSE 0 END AS CycleEndFlag,
-- Magically group by continuous dates by employee and location
ROW_NUMBER() OVER (PARTITION BY e.employeeId, du.LocationId ORDER BY Value) rn_loc,
DENSE_RANK() OVER (PARTITION BY e.employeeId ORDER BY Value) rn
-- End Magic
FROM
@Employees e
CROSS JOIN dates d
INNER JOIN @Duties du ON d.Value BETWEEN du.AssignmentStartDate AND ISNULL(du.AssignmentEndDate, '9999-12-31') AND du.employeeId = e.employeeId
INNER JOIN @ReportingCycles rc ON d.Value BETWEEN rc.startDate AND rc.endDate
)
INSERT @EmployeeTimelime
SELECT
MIN(Value) AS fromDate, MAX(Value) AS toDate, reportingCycleId, employeeId, locationId, assignmentValue,
MAX(HiredFlag) AS Hired,
MAX(CommencedFlag) AS Commenced,
ResignFlag AS Resigned,
FinishFlag AS Finished,
MAX(CycleStartFlag) AS startCycle,
MAX(CycleEndFlag) AS endCycle
FROM data
GROUP BY EmployeeId, reportingCycleId, locationId, assignmentValue, ResignFlag, FinishFlag, rn - rn_loc
--ORDER BY fromDate, toDate, employeeId, reportingCycleId, LocationId
OPTION (MAXRECURSION 0)
SELECT * FROM @EmployeeTimelime WHERE employeeId = '111'
