SQL SELECT * FROM

[Meh Blah]

Well, first of all, good morning everyone.

Now, i got a quite problem, i started veery short ago, and i got a problem when doing a Query.

How can i return all the tables?

Eg:
SELECT City FROM *;

This will give an error, since * isnt a table, but how could i represent this, and loop all existing tables? Since i'm creating then based on a variable wich depends on the current user of the database, wich i cannot retrive.

Greetings