What is the SQL command to list the number of product sales (number of rows) and total sales by month, with subtotals by month and a grand total for all sales? Figure P13.9 shows the result of the query.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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What is the SQL command to list the number of product sales (number of rows) and total sales by month, with subtotals by month and a grand total for all sales? Figure P13.9 shows the result of the query.

**Sales Data Analysis**

This table provides a summary of sales data broken down by month, including the number of products sold and the total sales amount. 

| **TM_MONTH** | **NUMPROD** | **TOTSALES** |
|--------------|-------------|--------------|
| 9            | 23          | 1239.85      |
| 10           | 13          | 1012.21      |
| NULL         | 36          | 2252.06      |

- **TM_MONTH**: Represents the month in numerical format. Here, '9' corresponds to September and '10' to October. The entry 'NULL' might indicate data that does not belong to a specific month, possibly representing unordered or miscellaneous entries.
  
- **NUMPROD**: Indicates the number of products sold in each period. For September, 23 products were sold, while in October, 13 products were sold. The NULL period shows a total of 36 products.

- **TOTSALES**: Reflects the total sales value in each period. For September, sales amounted to 1239.85, and for October, they totaled 1012.21. The NULL period has a total sales value of 2252.06.

This data can be useful for understanding sales trends over specific months and identifying periods with the highest sales volume or revenue.
Transcribed Image Text:**Sales Data Analysis** This table provides a summary of sales data broken down by month, including the number of products sold and the total sales amount. | **TM_MONTH** | **NUMPROD** | **TOTSALES** | |--------------|-------------|--------------| | 9 | 23 | 1239.85 | | 10 | 13 | 1012.21 | | NULL | 36 | 2252.06 | - **TM_MONTH**: Represents the month in numerical format. Here, '9' corresponds to September and '10' to October. The entry 'NULL' might indicate data that does not belong to a specific month, possibly representing unordered or miscellaneous entries. - **NUMPROD**: Indicates the number of products sold in each period. For September, 23 products were sold, while in October, 13 products were sold. The NULL period shows a total of 36 products. - **TOTSALES**: Reflects the total sales value in each period. For September, sales amounted to 1239.85, and for October, they totaled 1012.21. The NULL period has a total sales value of 2252.06. This data can be useful for understanding sales trends over specific months and identifying periods with the highest sales volume or revenue.
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