Code Structure Visualization

digraph code_relations {
    node [shape=box];
    
    "Sales Modified" -> "SUMMARIZE";
    "SUMMARIZE" -> "FILTER";
    "SUMMARIZE" -> "Product";
    "SUMMARIZE" -> "Total Regular Sales";
    "SUMMARIZE" -> "Total Discounted Sales";
    "SUMMARIZE" -> "Discount Savings";
    
    "FILTER" -> "ADDCOLUMNS";
    "FILTER" -> "Total Sales";
    "FILTER" -> "Discount Sales";
    
    "ADDCOLUMNS" -> "ALL";
    "ADDCOLUMNS" -> "Total Sales";
    "ADDCOLUMNS" -> "Discount Sales";
    
    "ALL" -> "Sales";
}

The code structure can be visualized using the DOT notation as follows:

• The main code block begins with the declaration of "Sales Modified".
• "Sales Modified" is then used as input for the "SUMMARIZE" function.
• Within the "SUMMARIZE" function, we have multiple columns and their corresponding calculations.
• The "FILTER" function is used to filter out rows where "Total Sales" is equal to "Discount Sales".
• The "FILTER" function uses the "ADDCOLUMNS" function to add two new columns - "Total Sales" and "Discount Sales".
• The "ADDCOLUMNS" function adds two columns to the existing table - "Sales".
• The "ALL" function is used to remove any existing filters on the "Sales" table.

Note: This is a simplified visualization and does not capture all the details of the code. It only represents the relations between different parts of the code.