Re: Default order of select datname from pg_database

=?UTF-8?B?RWzDrWFzIERhdmlk?= <elias.moreno.tec@gmail.com> writes:
> By any change, does the following query have an "order by" by default when
> omitted?:

> select datname from pg_database;

No.  No SQL query ever has a "default" order by.

> I executed that query against one of my servers and while looking at the
> names it seems complety random, the order is always the same, for instance:

An unqualified query is typically going to result in a sequential scan
of the table, so what you're seeing is the current physical order of the
tuples.  This might change after adding/deleting/changing the properties
of a database.

            regards, tom lane