magento 1.9 change admin password in database code example
Example: reset admin password magento 2
UPDATE admin_user SET password = CONCAT(SHA2('xxxxxxxYourNewPassword', 256), ':xxxxxxx:1') WHERE username = 'admin';
The xxxxxxx character sequence is a cryptographic salt, it is saved in app\etc\env.php file
<?php
...
'crypt' => [
'key' => 'f323fedda15153db7783e4610137a581'
],
...
?>