In example below I want to increase all salaries in *PayRoll* by the percentage found in *Increase*, starting from Increase Date in *Increase* and going forward.This logic works fine if you have a single increase, but in my example of the 3 increases it will obviously only apply the last one instead of compounding (i.e. will not apply 1st increase, then apply 2nd increase on top of 1st and 3rd on top of 2nd). I understand exactly why set-based command will not work but want to know best solution to problem (currently can only provide RBAR solution with cursor or loop). I look forward to your suggestions...[code="sql"] IF OBJECT_ID('PayRoll') IS NOT NULL DROP TABLE PayRoll GO CREATE TABLE [dbo].[PayRoll] ( [PayRollID] [INT] IDENTITY(1, 1) NOT NULL, [EmployeeNo] [INT] NOT NULL, [EmployeeName] [VARCHAR](8) NOT NULL, [Month] [DATE] NOT NULL, [Salary] [MONEY] NOT NULL, CONSTRAINT [PK_PayRoll] PRIMARY KEY CLUSTERED ( [PayRollID] ASC ) ) GO INSERT [dbo].[PayRoll] ([EmployeeNo], [EmployeeName], [Month], [Salary]) VALUES (123, N'John Doe', CAST(N'2016-01-01' AS Date), 5000) INSERT [dbo].[PayRoll] ([EmployeeNo], [EmployeeName], [Month], [Salary]) VALUES (123, N'John Doe', CAST(N'2016-02-01' AS Date), 5000) INSERT [dbo].[PayRoll] ([EmployeeNo], [EmployeeName], [Month], [Salary]) VALUES (123, N'John Doe', CAST(N'2016-03-01' AS Date), 5000) INSERT [dbo].[PayRoll] ([EmployeeNo], [EmployeeName], [Month], [Salary]) VALUES (123, N'John Doe', CAST(N'2016-04-01' AS Date), 5000) INSERT [dbo].[PayRoll] ([EmployeeNo], [EmployeeName], [Month], [Salary]) VALUES (123, N'John Doe', CAST(N'2016-05-01' AS Date), 5000) INSERT [dbo].[PayRoll] ([EmployeeNo], [EmployeeName], [Month], [Salary]) VALUES (123, N'John Doe', CAST(N'2016-06-01' AS Date), 5000) INSERT [dbo].[PayRoll] ([EmployeeNo], [EmployeeName], [Month], [Salary]) VALUES (123, N'John Doe', CAST(N'2016-07-01' AS Date), 5000) INSERT [dbo].[PayRoll] ([EmployeeNo], [EmployeeName], [Month], [Salary]) VALUES (123, N'John Doe', CAST(N'2016-08-01' AS Date), 5000) INSERT [dbo].[PayRoll] ([EmployeeNo], [EmployeeName], [Month], [Salary]) VALUES (123, N'John Doe', CAST(N'2016-09-01' AS Date), 5000) INSERT [dbo].[PayRoll] ([EmployeeNo], [EmployeeName], [Month], [Salary]) VALUES (123, N'John Doe', CAST(N'2016-10-01' AS Date), 5000) INSERT [dbo].[PayRoll] ([EmployeeNo], [EmployeeName], [Month], [Salary]) VALUES (123, N'John Doe', CAST(N'2016-11-01' AS Date), 5000) INSERT [dbo].[PayRoll] ([EmployeeNo], [EmployeeName], [Month], [Salary]) VALUES (123, N'John Doe', CAST(N'2016-12-01' AS Date), 5000) INSERT [dbo].[PayRoll] ([EmployeeNo], [EmployeeName], [Month], [Salary]) VALUES (456, N'Jane Doe', CAST(N'2016-01-01' AS Date), 6000) INSERT [dbo].[PayRoll] ([EmployeeNo], [EmployeeName], [Month], [Salary]) VALUES (456, N'Jane Doe', CAST(N'2016-02-01' AS Date), 6000) INSERT [dbo].[PayRoll] ([EmployeeNo], [EmployeeName], [Month], [Salary]) VALUES (456, N'Jane Doe', CAST(N'2016-03-01' AS Date), 6000) INSERT [dbo].[PayRoll] ([EmployeeNo], [EmployeeName], [Month], [Salary]) VALUES (456, N'Jane Doe', CAST(N'2016-04-01' AS Date), 6000) INSERT [dbo].[PayRoll] ([EmployeeNo], [EmployeeName], [Month], [Salary]) VALUES (456, N'Jane Doe', CAST(N'2016-05-01' AS Date), 6000) INSERT [dbo].[PayRoll] ([EmployeeNo], [EmployeeName], [Month], [Salary]) VALUES (456, N'Jane Doe', CAST(N'2016-06-01' AS Date), 6000) INSERT [dbo].[PayRoll] ([EmployeeNo], [EmployeeName], [Month], [Salary]) VALUES (456, N'Jane Doe', CAST(N'2016-07-01' AS Date), 6000) INSERT [dbo].[PayRoll] ([EmployeeNo], [EmployeeName], [Month], [Salary]) VALUES (456, N'Jane Doe', CAST(N'2016-08-01' AS Date), 6000) INSERT [dbo].[PayRoll] ([EmployeeNo], [EmployeeName], [Month], [Salary]) VALUES (456, N'Jane Doe', CAST(N'2016-09-01' AS Date), 6000) INSERT [dbo].[PayRoll] ([EmployeeNo], [EmployeeName], [Month], [Salary]) VALUES (456, N'Jane Doe', CAST(N'2016-10-01' AS Date), 6000) INSERT [dbo].[PayRoll] ([EmployeeNo], [EmployeeName], [Month], [Salary]) VALUES (456, N'Jane Doe', CAST(N'2016-11-01' AS Date), 6000) INSERT [dbo].[PayRoll] ([EmployeeNo], [EmployeeName], [Month], [Salary]) VALUES (456, N'Jane Doe', CAST(N'2016-12-01' AS Date), 6000) GO IF OBJECT_ID('Increase') IS NOT NULL DROP TABLE Increase GO CREATE TABLE [dbo].[Increase] ( [IncreaseID] [INT] IDENTITY(1, 1) NOT NULL, [IncreaseDate] [DATE] NOT NULL, [IncreasePercent] [MONEY] NOT NULL, CONSTRAINT [PK_Increase] PRIMARY KEY CLUSTERED ( [IncreaseID] ASC ) ) GO INSERT [dbo].[Increase] ([IncreaseDate], [IncreasePercent]) VALUES (CAST(N'2016-04-01' AS Date), 5.0000) INSERT [dbo].[Increase] ([IncreaseDate], [IncreasePercent]) VALUES (CAST(N'2016-09-01' AS Date), 10.0000) INSERT [dbo].[Increase] ([IncreaseDate], [IncreasePercent]) VALUES (CAST(N'2016-11-01' AS Date), 7.0000) GO SELECT 'Before Update' AS [Description], * FROM [dbo].[PayRoll] ORDER BY [EmployeeNo], [Month] UPDATE p SET p.[Salary] = p.[Salary] * ( 1 + ( i.IncreasePercent / 100 ) ) FROM [dbo].[PayRoll] p INNER JOIN [dbo].[Increase] i ON i.IncreaseDate <= p.[Month] SELECT 'Increases Expected' AS [Description], * FROM [dbo].[Increase] ORDER BY [IncreaseDate] SELECT 'After Update' AS [Description], * FROM [dbo].[PayRoll] ORDER BY [EmployeeNo], [Month] [/code]
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