Question

我有2个表[EmployeeInfo] [EmployeeInfoHistory]，我在此表中存储员工的工资。我能够得到员工的工资与员工和员工的薪水。

但我想显示每个月的员工工资，如下所示。

我的结构是[EmployeeInfo]：

Create Table [EmployeeInfo]
(
  EmpID Int,
  Salary Int,
  EmployementStatus Varchar(50),
  HiringDate Date
);

我的结构是[EmployeeInfoHistory]：

Create Table [EmployeeInfoHistory]
(
  EmpID Int,
  NewSalary Int,
  UpdatedEmployementStatus Varchar(50),
  PromotionDate Date
);

信息表数据：

EmpID  Salary  Status   HiringDate
1      20000   Intern   2017-10-02
2      30000   Jr. DBA  2017-11-01

InfoHistory表的数据：

EmpID  Salary  UpdatedStatus   PromotionDate
1      25000   Jr. DBA         2018-01-01
2      45000   Sr. DBA         2018-01-01

我想以给定的格式列出日期。

EmpID   Month     Salary  Status
1       October   20k     Intern
1       November  20k     Intern
1       December  20k     Intern
1       January   25k     Jr. DBA
2       November  30k     Jr. DBA
2       December  30k     Jr. DBA
2       January   45k     Sr. DBA

提前致谢

Answer 1

获取历史记录表中sum列数据的salary与所需员工ID对应的月份。

Answer 2

您需要一张包含日期的表格。在这里，我使用CTE制作了一张桌子，我加入你的桌子。

; WITH DS AS
(
    SELECT cast (Dateadd(year, -25, getdate()) AS date) as [Date]
        UNION all
    SELECT dateadd(Month, 1, [Date])
        FROM DS
        WHERE Date < getdate()
)
Select EMP.EmpID, DateName(month, DS.[Date]) as [Month], isnull(HIS.NewSalary, EMP.Salary) as Salary, ISNULL(HIS.UpdatedStatus, EMP.EmployementStatus) as [Status]
from EmployeeInfo as EMP
    inner join DS 
    on EMP.HiringDate <= DS.[Date]  
        left join EmployeeInfoHistory as HIS
        on HIS.EmpId = EMP.EmpID and HIS.PromotionDate <= DS.[Date]  
option(MaxRecursion 10000)

获取每个月的员工工资

2 个答案: