How can income totals be determined for two distinct individuals under different circumstances using a stored procedure?

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To determine income totals for two distinct individuals under different circumstances using a stored procedure, we can follow the steps below:

1. Define the input parameters for the stored procedure, such as the individual's ID and the time period for which the income is to be calculated.

2. Using the input parameters, fetch the relevant data from the database, such as the individual's salary and any additional income sources.

3. Calculate the total income for the individual by summing up the salary and additional income.

4. Repeat the above steps for the second individual, using their ID and time period.

5. Finally, return the income totals for both individuals as output parameters.

Here's an example of a SQL stored procedure that calculates income totals for two individuals:

CREATE PROCEDURE CalculateIncomeTotals
    @Individual1Id INT,
    @Individual1Period DATE,
    @Individual2Id INT,
    @Individual2Period DATE
AS
BEGIN
    DECLARE @Individual1Income DECIMAL(10, 2), @Individual2Income DECIMAL(10, 2)

    -- Calculate income for individual 1
    SELECT @Individual1Income = SUM(Salary + AdditionalIncome)
    FROM Income
    WHERE IndividualId = @Individual1Id
    AND Date BETWEEN DATEADD(MONTH, -1, @Individual1Period) AND @Individual1Period

    -- Calculate income for individual 2
    SELECT @Individual2Income = SUM(Salary + AdditionalIncome)
    FROM Income
    WHERE IndividualId = @Individual2Id
    AND Date BETWEEN DATEADD(MONTH, -1, @Individual2Period) AND @Individual2Period

    -- Return income totals
    SELECT @Individual1Income AS Individual1Income, @Individual2Income AS Individual2Income
END

In this example, we assume that the income data is stored in a table called "Income", with columns for the individual's ID, salary, additional income, and date. The stored procedure takes in the IDs and time periods for two individuals and calculates their income totals using an aggregate function (SUM). Finally, the income totals are returned as output parameters.