How to remove or replace HTTP referer when submitting a form from site A to site B?

Question

MySQL

It is necessary that site B does not know from which site the data from the html form was sent to it.
Site A has a regular form and sends it to site B.
Does anyone have any idea how to hide site A from which the form is submitted from site B?

Answer 1

The problem is that the field type is TEXT and I can't change it because the database is already full

Nonsense

ALTER TABLE `table` 
  CHANGE COLUMN `A` `A` INT,
  CHANGE COLUMN `B` `B` FLOAT;

There is no need, in mathematical operations, MySQL itself tries to convert strings to numbers.

Answer 2

Send from server A to intermediate server A', where a request to server B with the necessary parameters will be manually generated.

Answer 3

It's impossible, does it have an IP address? Only with the help of a chain of dying proxies.
PS The question has incorrect tags.

Answer 4

Someone decided to organize a CSRF attack?)