sql - 插入时循环/迭代日期范围

Question

因此，我将数据按以下格式导入到表中(我们称之为 RAWDATA):

EMPID  | STARTDATE  | ENDDATE    | TOTALHOURS | TOTALWAGES
ABC123 | 01-01-2013 | 01-28-2013 | 160.0      | 1800.00
XYZ987 | 01-01-2013 | 01-31-2013 | 200.0      | 2500.00

我需要获取该数据，并将其按以下格式放入不同的表 (EMPDATA) 中:

EMPID  | DATE       | HOURS | WAGES
ABC123 | 01-01-2013 | 5.71  | 64.29
ABC123 | 01-02-2013 | 5.71  | 64.29
ABC123 | 01-03-2013 | 5.71  | 64.29
...... | .......... | ....  | .....
XYZ987 | 01-01-2013 | 6.45  | 80.66
XYZ987 | 01-02-2013 | 6.45  | 80.66
XYZ987 | 01-03-2013 | 6.45  | 80.66
...... | .......... | ....  | .....

我的想法是在 STARTDATE 和 ENDDATE 之间执行 DATEDIFF 来计算出将工时和工资分散到多少天(在本例中为:28)，然后对于每一天，插入包含平均工时和工资的行每天工作。这一切都将通过 RAWDATA 表上的触发器来完成。我只是不确定如何在触发器中从 STARTDATE 迭代到 ENDDATE 。

编辑: 我还应该指出，导入的数据并不总是每行具有相同的开始/结束日期。我已经更新了第一个表格示例来表明这一点。

Answer 1

1. 创建日期表并使用JOIN。
2. 计算startdate和enddate之间的天数
3. 将总工时和总工资除以计算出的天数。

这是我的解决方案:

SELECT a.empid, b.dd AS date, 
  CAST(a.totalhours AS decimal) / (DATEDIFF(day, startdate, enddate) + 1) AS hours,
  CAST(a.totalwages AS decimal) / (DATEDIFF(day, startdate, enddate) + 1) AS wages
FROM wages a
INNER JOIN dates b ON dd BETWEEN a.startdate AND a.enddate

结果

|  EMPID |       DATE |         HOURS |          WAGES |
--------------------------------------------------------
| ABC123 | 2013-01-01 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-02 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-03 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-04 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-05 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-06 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-07 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-08 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-09 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-10 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-11 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-12 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-13 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-14 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-15 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-16 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-17 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-18 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-19 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-20 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-21 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-22 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-23 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-24 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-25 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-26 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-27 | 5.71428571428 | 64.28571428571 |
| ABC123 | 2013-01-28 | 5.71428571428 | 64.28571428571 |

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