On this page 
Warning:
CockroachDB v2.1 is no longer supported as of April 30, 2020. For more details, refer to the Release Support Policy.
The SHOW USERS statement lists the users for all databases.
Synopsis
Required privileges
The user must have the SELECT privilege on the system table.
Example
> SHOW USERS;
+-------------+
| user_name |
+-------------+
| jpointsman |
| maxroach |
| root |
+-------------+
See also
Was this helpful?
