First, the database and table which exists:

USE dbname;
select * from Authentication;
+----+---------+--------------------+---------------+----------------------+
| id | userid  | password           | role          | email                |
+----+---------+--------------------+---------------+----------------------+
|  7 | user1   | ljkjkjhjhjdhfZn0mz | administrator | [email protected]       |
| 10 | user2   | gdgdgdgdgdg^4YU    | user          | [email protected]       |
| 11 | user3   | dsdsdsdsdsd8       | user          | [email protected]       |
+----+---------+--------------------+---------------+----------------------+

Now create the other table and its fields:

CREATE TABLE `Login` (
  `id` int(6) unsigned NOT NULL AUTO_INCREMENT,
  `TimeLoggedIn` text NOT NULL,
  PRIMARY KEY (`id`),
  KEY `id` (`id`),
  KEY `id_2` (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=12 DEFAULT CHARSET=latin1;

Now duplicate the field id in Login and populate it with existing data from table Authentication.

INSERT INTO `Login` (`id`) SELECT `id` FROM `Authentication`;

Now create relation:

ALTER TABLE `Authentication` ADD FOREIGN KEY (`id`) REFERENCES `Login`(`id`) ON DELETE RESTRICT ON UPDATE RESTRICT;

Joel G Mathew

Joel G Mathew, known in tech circles by the pseudonym Droidzone, is an opensource and programming enthusiast.

He is a full stack developer, whose favorite languages are currently Python and Vue.js. He is also fluent in Javascript, Flutter/Dart, Perl, PHP, SQL, C and bash shell scripting. He loves Linux, and can often be found tinkering with linux kernel code, and source code for GNU applications. He used to be an active developer on XDA forums, and his tinkered ROMS used to be very popular in the early 2000s.

His favorite pastime is grappling with GNU compilers, discovering newer Linux secrets, writing scripts, hacking roms, and programs (nothing illegal), reading, blogging. and testing out the latest gadgets.

When away from the tech world, Dr Joel G. Mathew is a practising ENT Surgeon, busy with surgeries and clinical practise.