根据员工类型计算总工资

Question

我想计算每个员工每个月的薪水，所以

我有两个表格和两个视图，看起来像这样

Employees_View

| ID |  Name | PayRate | PayUnitCode | Commission |
|----|-------|---------|-------------|------------|
|  1 | James |      10 |           C |          0 |
|  2 |  Mike |   10000 |           S |          0 |
|  3 |  Jude |   20000 |          SC |          5 |
|  4 | Clara |       8 |           C |          0 |

工作

| id |             Created |
|----|---------------------|
|  1 | 01/21/2016 10:56:05 |
|  2 | 01/21/2016 10:56:05 |
|  3 | 01/21/2016 10:56:05 |
|  4 | 01/21/2016 10:56:05 |
|  5 | 01/21/2016 12:11:59 |
|  6 | 01/25/2016 08:03:07 |
|  7 | 11/01/2015 22:55:22 |

Job_Items_View

| Job_ID | Amount | Emp_ID |
|--------|--------|--------|
|      1 |    135 |      4 |
|      1 |    500 |      2 |
|      3 |   1500 |      2 |
|      3 |    250 |      4 |
|      4 |   1000 |      2 |
|      5 |    500 |      4 |
|      6 |    500 |      4 |
|      7 |   1000 |      1 |

支付单位

| Code |                   Name |
|------|------------------------|
|    S |                 Salary |
|    C |             Commission |
|   SC | Salary plus Commission |

我在这里有一个SQL FIDDLE 的数据

当我执行查询时

DECLARE @startDateTime DATETIME = '2015-11-01 00:00:00'
DECLARE @endDateTime DATETIME = '2016-02-28 23:59:59'

;WITH sales AS
(
  SELECT 
    ev.ID,
    ISNULL(SUM(jiv.Amount), 0) AS TotalSales,
    MONTH(j.Created) AS [Month],
    YEAR(j.Created) AS [Year]
  FROM Employees_View AS ev
  LEFT JOIN Job_Items_View AS jiv ON jiv.Emp_ID = ev.ID
  LEFT JOIN Jobs AS j ON j.ID = jiv.Job_ID
  WHERE j.Created BETWEEN @startDateTime AND @endDateTime
  GROUP BY 
    ev.ID,
    MONTH(j.Created),
    YEAR(j.Created)
),
commissions AS
(
  SELECT
    s.ID,
    CASE ev.PayUnitCode 
      WHEN 'C' THEN s.TotalSales * (ev.PayRate / 100)   
      WHEN 'SC' THEN (SELECT SUM(Amount) FROM Job_Items_View) * (ev.Commission / 100)
      ELSE 0
    END AS TotalCommission
  FROM sales AS s
  JOIN Employees_View AS ev ON ev.ID = s.ID
),
salaries AS
(
  SELECT 
    ID, 
    CASE PayUnitCode 
      WHEN 'C' THEN 0 
      ELSE PayRate 
    END AS Salary 
  FROM Employees_View 
),
totals AS
(
  SELECT 
    salaries.ID,
    ISNULL(sales.Month, MONTH(@startDateTime)) AS [Month],
    ISNULL(sales.Year, YEAR(@startDateTime)) AS [Year],
    ISNULL(sales.TotalSales, 0) AS TotalSales,
    salaries.Salary,
    ISNULL(commissions.TotalCommission, 0) AS TotalCommission
  FROM salaries
  LEFT JOIN sales ON salaries.ID = sales.ID
  LEFT JOIN commissions ON commissions.ID = sales.ID
)
SELECT 
  ev.PayRate,
  ev.Name,
  t.Salary + t.TotalCommission AS Pay,
  LEFT(DATENAME(MONTH, DATEADD(MONTH , t.[Month], -1)), 3) 
    + '-' + CAST(t.[Year] AS VARCHAR) AS [Month],
  ev.ID AS Emp_ID,
  pu.Name AS PayUnit,
  ev.Commission
FROM totals AS t
JOIN Employees_View AS ev ON ev.ID = t.ID
JOIN PayUnits AS pu ON pu.Code = ev.PayUnitCode

我明白了

| PayRate |  Name |   Pay |    Month | Emp_ID |                PayUnit | Commission |
|---------|-------|-------|----------|--------|------------------------|------------|
|      10 | James |   100 | Nov-2015 |      1 |             Commission |          0 |
|   10000 |  Mike | 10000 | Jan-2016 |      2 |                 Salary |          0 |
|   20000 |  Jude | 20000 | Nov-2015 |      3 | Salary plus Commission |          5 |
|       8 | Clara | 110.8 | Jan-2016 |      4 |             Commission |          0 |

我希望得到

| PayRate |  Name |   Pay  |    Month | Emp_ID |                PayUnit | Commission |
|---------|-------|--------|----------|--------|------------------------|------------|
|      10 | James |   100  | Nov-2015 |      1 |             Commission |          0 |
|   10000 |  Mike | 10000  | Jan-2016 |      2 |                 Salary |          0 |
|   2000  |  Jude |20269.25| Nov-2015 |      3 | Salary plus Commission |          5 |
|       8 | Clara | 110.8  | Jan-2016 |      4 |             Commission |          0 |

对于 PayUnit.Code = C (Commission) ，Pay = 总销售额 * (employee.Payrate/100)

对于 PayUnit.Code = S (Salary) ，Pay = employee.Payrate

对于 PayUnit.Code = SC (Salary plus Commission) , Pay =employee.Payrate + (total sales * (employee.Commission/100))

注意 Judes pay 是 20269.25 而不是上表中的 20000

Answer 1

发生这种情况是因为您在按期间过滤整个连接记录集时将 Jude 从销售 CTE 中排除（尽管有 LEFT JOIN），因此不会根据她在佣金 CTE 中的记录计算佣金。相反，您应该只将过滤器应用于作业子集，如下所示：

WITH sales AS
(
  SELECT 
    ev.ID,
    ISNULL(SUM(jiv.Amount), 0) AS TotalSales,
    MONTH(j.Created) AS [Month],
    YEAR(j.Created) AS [Year]
  FROM Employees_View AS ev
  LEFT JOIN Job_Items_View AS jiv ON jiv.Emp_ID = ev.ID
  LEFT JOIN 
  (select * from jobs WHERE Created BETWEEN @startDateTime AND @endDateTime) as j ON j.ID = jiv.Job_ID
  GROUP BY 
    ev.ID,
    MONTH(j.Created),
    YEAR(j.Created)
)

这里是updated SQLFiddle