assuming you know the hash of your password you can insert an account with the following sql
INSERT INTO `wp_users`
(
`user_login`,
`user_pass`,
`user_nicename`,
`user_email`,
`user_url`,
`user_registered`,
`user_activation_key`,
`user_status`,
`display_name`)
VALUES ('SOMEUSERNAME','SOMEPASSWORDHASH','SOMENICKNAME','SOME@EMAIL.ADDR','','1955-11-05 00:00:00','SOMEACTIVATIONKEY',0,'SOMEDISPLAYNAME');
INSERT INTO `wp_usermeta`
(
`user_id`,
`meta_key`,
`meta_value`)
SELECT
`ID`,
'wp_capabilities',
'a:1:{s:13:\"administrator\";b:1;}'
FROM `wp_users`
WHERE `user_login`='SOMEUSERNAME';