我正在尝试制定年金支付计划。我知道网上有一些可用的解决方案,但由于我需要更改每月付款金额,我无法使用这些解决方案,并且由于安全策略,我也无法安装新软件包。现在我正在努力计算每月的期初余额,因为它取决于最后一行计算的资本。有没有比光标更有效的方法来做到这一点。我现在有 3000 万行。
我拥有的数据:
这是一个非常简单的例子,可能有不同的费率、不同的月供和缺少的日期。所以我不能在线使用可用的解决方案。
我想要的最终结果:
在哪里:
- 利息 = 期初余额 x 利率费用
- 资本 = 每月还款 - 利息
- 期初余额 = 最后期初余额 - 最后资本
我尝试过使用LAG
,但它不像LAG
确定性函数那样工作。
这是带有帐户的数据的脚本。
CREATE TABLE [temp_da_test].[example_3](
[Account] [nvarchar](255) NULL,
[Month] [date] NULL,
[Rate Charge] [float] NULL,
[Opening Balance] [money] NULL,
[Monthly Repayment] [money] NULL,
[Interest] [money] NULL,
[Capital] [money] NULL
) ON [PRIMARY]
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'A', CAST(N'2005-06-30' AS Date), 0.014419, 2000.0000, 0.0000, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'A', CAST(N'2005-07-31' AS Date), 0.0149, NULL, 35.8800, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'A', CAST(N'2005-08-31' AS Date), 0.0149, NULL, 35.8800, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'A', CAST(N'2005-09-30' AS Date), 0.014419, NULL, 35.8800, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'A', CAST(N'2005-10-31' AS Date), 0.0149, NULL, 35.8800, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'A', CAST(N'2005-11-30' AS Date), 0.014419, NULL, 35.8800, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'A', CAST(N'2005-12-31' AS Date), 0.0149, NULL, 35.8800, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'A', CAST(N'2006-01-31' AS Date), 0.0149, NULL, 35.8800, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'A', CAST(N'2006-02-28' AS Date), 0.013458, NULL, 35.8800, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'A', CAST(N'2006-03-31' AS Date), 0.0149, NULL, 35.8800, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'A', CAST(N'2006-04-30' AS Date), 0.014419, NULL, 35.8800, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'A', CAST(N'2006-05-31' AS Date), 0.0149, NULL, 35.8800, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'A', CAST(N'2006-06-30' AS Date), 0.014419, NULL, 35.8800, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'A', CAST(N'2006-07-31' AS Date), 0.0149, NULL, 35.8800, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'A', CAST(N'2006-08-31' AS Date), 0.0149, NULL, 35.8800, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'A', CAST(N'2006-09-30' AS Date), 0.014419, NULL, 35.8800, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'A', CAST(N'2006-10-31' AS Date), 0.0149, NULL, 35.8800, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'A', CAST(N'2006-11-30' AS Date), 0.014419, NULL, 35.8800, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'A', CAST(N'2006-12-31' AS Date), 0.0149, NULL, 35.8800, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'A', CAST(N'2007-01-31' AS Date), 0.0149, NULL, 35.8800, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'B', CAST(N'2005-06-30' AS Date), 0.014419, 4000.0000, 0.0000, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'B', CAST(N'2005-07-31' AS Date), 0.0149, NULL, 71.7600, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'B', CAST(N'2005-08-31' AS Date), 0.0149, NULL, 71.7600, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'B', CAST(N'2005-09-30' AS Date), 0.014419, NULL, 71.7600, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'B', CAST(N'2005-10-31' AS Date), 0.0149, NULL, 71.7600, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'B', CAST(N'2005-11-30' AS Date), 0.014419, NULL, 71.7600, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'B', CAST(N'2005-12-31' AS Date), 0.0149, NULL, 71.7600, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'B', CAST(N'2006-01-31' AS Date), 0.0149, NULL, 71.7600, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'B', CAST(N'2006-02-28' AS Date), 0.013458, NULL, 71.7600, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'B', CAST(N'2006-03-31' AS Date), 0.0149, NULL, 71.7600, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'B', CAST(N'2006-04-30' AS Date), 0.014419, NULL, 71.7600, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'B', CAST(N'2006-05-31' AS Date), 0.0149, NULL, 71.7600, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'B', CAST(N'2006-06-30' AS Date), 0.014419, NULL, 71.7600, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'B', CAST(N'2006-07-31' AS Date), 0.0149, NULL, 71.7600, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'B', CAST(N'2006-08-31' AS Date), 0.0149, NULL, 71.7600, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'B', CAST(N'2006-09-30' AS Date), 0.014419, NULL, 71.7600, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'B', CAST(N'2006-10-31' AS Date), 0.0149, NULL, 71.7600, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'B', CAST(N'2006-11-30' AS Date), 0.014419, NULL, 71.7600, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'B', CAST(N'2006-12-31' AS Date), 0.0149, NULL, 71.7600, NULL, NULL)
GO
INSERT [temp_da_test].[example_3] ([Account], [Month], [Rate Charge], [Opening Balance], [Monthly Repayment], [Interest], [Capital]) VALUES (N'B', CAST(N'2007-01-31' AS Date), 0.0149, NULL, 71.7600, NULL, NULL)
GO