Yes @Queth Would you like me to post a copy of the structure of the users table so you can see all the different entries there?
Update: Here is it @Queth … you can see from the table description you have a lot of choices 
users table
discourse=# \d users
Table "public.users"
Column | Type | Collation | Nullable | Default
---------------------------+-----------------------------+-----------+----------+-----------------------------------
id | integer | | not null | nextval('users_id_seq'::regclass)
username | character varying(60) | | not null |
created_at | timestamp without time zone | | not null |
updated_at | timestamp without time zone | | not null |
name | character varying | | |
seen_notification_id | integer | | not null | 0
last_posted_at | timestamp without time zone | | |
password_hash | character varying(64) | | |
salt | character varying(32) | | |
active | boolean | | not null | false
username_lower | character varying(60) | | not null |
last_seen_at | timestamp without time zone | | |
admin | boolean | | not null | false
last_emailed_at | timestamp without time zone | | |
trust_level | integer | | not null |
approved | boolean | | not null | false
approved_by_id | integer | | |
approved_at | timestamp without time zone | | |
previous_visit_at | timestamp without time zone | | |
suspended_at | timestamp without time zone | | |
suspended_till | timestamp without time zone | | |
date_of_birth | date | | |
views | integer | | not null | 0
flag_level | integer | | not null | 0
ip_address | inet | | |
moderator | boolean | | | false
title | character varying | | |
uploaded_avatar_id | integer | | |
locale | character varying(10) | | |
primary_group_id | integer | | |
registration_ip_address | inet | | |
staged | boolean | | not null | false
first_seen_at | timestamp without time zone | | |
silenced_till | timestamp without time zone | | |
group_locked_trust_level | integer | | |
manual_locked_trust_level | integer | | |
secure_identifier | character varying | | |
Indexes:
"users_pkey" PRIMARY KEY, btree (id)
"index_users_on_secure_identifier" UNIQUE, btree (secure_identifier)
"index_users_on_username" UNIQUE, btree (username)
"index_users_on_username_lower" UNIQUE, btree (username_lower)
"idx_users_admin" btree (id) WHERE admin
"idx_users_moderator" btree (id) WHERE moderator
"index_users_on_last_posted_at" btree (last_posted_at)
"index_users_on_last_seen_at" btree (last_seen_at)
"index_users_on_uploaded_avatar_id" btree (uploaded_avatar_id)
Referenced by:
TABLE "user_security_keys" CONSTRAINT "fk_rails_90999b0454" FOREIGN KEY (user_id) REFERENCES users(id)
TABLE "poll_votes" CONSTRAINT "fk_rails_b64de9b025" FOREIGN KEY (user_id) REFERENCES users(id)
TABLE "bookmarks" CONSTRAINT "fk_rails_c1ff6fa4ac" FOREIGN KEY (user_id) REFERENCES users(id)
It’s always a good idea to SELECT first and make sure you are happy with your query before UPDATE and always make a full backup before you start monkeying around with mass DB changes. Fat finger mistakes happen to even the best of the best. One of the main differences between an expert and a novice is the expert always makes a backup first