What is the default pw for the postgresql db account?
Is it a correct management practice to change this pw?
template1=# select * from pg_user;
usename | usesysid | usecreatedb | usesuper | usecatupd | passwd | valuntil | useconfig
------------+----------+-------------+----------+-----------+----------+----------+-----------
postgresql | 10 | t | t | t | ******** | |
