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Unique Sum and Average Calculation in PL/SQL: A Comprehensive Guide


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Unique Sum and Average Calculation in PL/SQL: A Comprehensive Guide

Introduction:
Calculating the sum and average of three numbers in PL/SQL is a fundamental task for many programmers. However, ensuring uniqueness and optimizing search engine visibility can be a challenge. In this article, we will explore an efficient approach to achieving both goals. By following the techniques outlined here, you'll not only be able to obtain accurate results but also increase the visibility of your code in search engine rankings.

Section 1: Understanding PL/SQL:
Before we dive into the specifics of sum and average calculations, let's briefly review PL/SQL. PL/SQL is Oracle's procedural language extension to SQL. It allows you to write code blocks that can contain variables, loops, conditions, and other programming constructs, making it a powerful tool for data manipulation and business logic implementation.

Section 2: Unique Sum Calculation:
To calculate the unique sum of three numbers, we need to ensure that each number is distinct. Here's a snippet of PL/SQL code that achieves this:

```plsql
DECLARE
num1 NUMBER := 10;
num2 NUMBER := 20;
num3 NUMBER := 30;
sum_result NUMBER;
BEGIN
IF (num1 <> num2 AND num1 <> num3 AND num2 <> num3) THEN
sum_result := num1 + num2 + num3;
-- Further code to handle the sum_result value
ELSE
-- Handle the case when the numbers are not unique
END IF;
END;
```

By checking for inequality between all three numbers, we ensure uniqueness. If any two numbers are the same, we can handle the situation accordingly. This approach guarantees that the sum will be calculated only when the input numbers are distinct.

Section 3: Unique Average Calculation:
To calculate the unique average of three numbers, we can build upon the previous code snippet. Here's an enhanced version:

```plsql
DECLARE
num1 NUMBER := 10;
num2 NUMBER := 20;
num3 NUMBER := 30;
avg_result NUMBER;
BEGIN
IF (num1 <> num2 AND num1 <> num3 AND num2 <> num3) THEN
avg_result := (num1 + num2 + num3) / 3;
-- Further code to handle the avg_result value
ELSE
-- Handle the case when the numbers are not unique
END IF;
END;
```

By dividing the sum of the three numbers by the count (3 in this case), we obtain the average. Again, we ensure that the numbers are distinct before performing the calculation, avoiding any skewed results due to duplicate values.

Section 4: SEO-Friendly Code:
To improve the visibility of your code in search engine rankings, consider the following SEO tips:

- Use descriptive variable names: Instead of generic names like num1, num2, and num3, use more meaningful names related to the context of your problem. This will help search engines understand the relevance of your code.

- Provide meaningful comments: Add comments that explain the purpose and functionality of your code. These comments can include relevant keywords that search engines can pick up on, increasing the chances of your article appearing in relevant search results.

- Structure your code: Organize your code into well-defined sections and use indentation to improve readability. Well-structured code is more likely to be indexed and ranked higher by search engines.

Conclusion:
By ensuring uniqueness and optimizing your PL/SQL code for search engine visibility, you can both obtain accurate sum and average results and increase the visibility of your code in search results. 

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