# Running postgresql query with backslash

I've been able to connect to a Vertica database, and also been able to run a SELECT query. But I'm not being able to run a query with a backslash in it. (Vertica has commands like postgresql.) The command I'm trying to run is \d;. I've tried variations like below with a varying number of backslashes without success:

SQLExecute[conn, "\\\d;"]

What am I doing wrong? Any help would be greatly appreciated!

Edit: I should add that the error I'm getting is this: JDBC::error: [Vertica][VJDBC](4856) ERROR: Syntax error at or near "\" >>

-
Three backslashes cannot be correct. Mathematica requires that each one be escaped, once, as \\. If Vertica requires an additional escape, you will have to enter four backslashes for each one you want to appear in the query. Beyond that, I have no suggestions, since I've never used this software--sorry. –  Oleksandr R. Mar 27 '13 at 8:49
@OleksandrR. What is the Vertica connection string? It's native into Mathematica? –  Murta Oct 22 '14 at 18:26

columns={"table_schema","table_name","column_name","data_type","data_type_length","is_nullable","column_default"};