I have created an SQL query that retrieves all the comments of a post.
You can copy the result into an Excel file or Google Sheet then use it as you want by resorting or filtering it.
☞ Download the SQL query to get all the comments of a post
(The database connection is in the file. You will need to connect to the SQL Server that was created by @arcange.)
If you need more data to the result, please feel free to ask me.