SQL Virus Using Self-Referential Queries for PostgreSQL

Under PostgreSQL, the currently executing queries can be obtained using the following query:

It also seems that the process that retrieves the queries from the pg_stat_activity is never included in the results, only in other processes' results, which makes it impossible to use it for a virus.

To access the pg_stat_activity table, the user must be an administrator or be retrieving information on a process owned by the same user, which means that any user can obtain its own queries.