Delete table with empty name in PostgreSQL - sql

Question

I'm trying to remove one of my tables stored in PostgreSQL 8.3.8 32bit.
Strange is that my table doesn't have a name, it's empty. Where I do:
SELECT * FORM pg_catalog.pg_tables;
it says that me tablename name is null.
When I try to delete my table:
DROP TABLE sde. ;
where sde is my schemaname,
error appears, telling me that there is a syntax error.
ERROR: syntax error at or near ";"
LINE 1:drop table sde. ;
Is there any way to delete that table?
I also tried that
DROP TABLE sde.'';
But still error appears.
My table has OID. Is it possible to delete it by OID?
The best solution for me would be renaming that table, that I can save my data from that table.

Answer 1

You cannot create table with empty name:
tgr=# create table "" ();
ERROR: zero-length delimited identifier at or near """"
LINE 1: create table "" ();
However you can create a table with a lot of spaces, including newlines:
create table "
" ();
To work with such table:
Find it in information_schema.tables
Copy/paste table name in some command in double quotes ("")
When the previous fails, you can try to update pg_class directly. If you have table OID, try this:
update pg_class set relname = 'test'::name where oid = <<YourOID>>;