Hello Gustavo,

Thanks for showing interest in wpDataTables.

Firstly, I would like to sincerely apologize for the delayed response as we have been experiencing an unusually high number of tickets. I am sorry that it has taken longer than usual to respond to your concern and your patience is highly appreciated.

If you're referring to this page of price comparison table examples, these are made by using the Simple Table method. 

This can only have data manually input from scratch,

or you can manually copy any Excel-like data, by pasting it over the cells.

But, it is not able to "pull any data" from the database.

If you need to pull data from database tables, such as, if you have a table in the database "products", or for custom post types, this data can only be pulled using SQL queries.

On this page, you can see detailed instructions with an example and a video.

Please note: Using this plugin feature requires at least a basic knowledge of SQL. It is assumed that you can create the table in some MySQL data manager (e.g., PHPMyAdmin, MySQL Workbench), and prepare a SQL query that will return the data you need. If you do not know how to use MySQL, refer to the “Create a MySQL-query-based table by generating a query to MySQL database” section. It will explain how to create complete tables or MySQL queries without this basic knowledge. Please be advised that preparing MySQL queries for you is not included in the plugin support.

Let me know if you have any further questions. Thanks.