Subject: Re: Problem with DROP ROLE
From: Guillaume Lelarge <guillaume@lelarge.info>
To: Brice =?ISO-8859-1?Q?Andr=E9?= <brice@famille-andre.be>
Cc: pgsql-sql@postgresql.org
Date: Wed, 19 Oct 2011 13:59:00 +0200
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On Wed, 2011-10-19 at 12:11 +0200, Brice André wrote:
> Hello everyone,
> 
> I would want to implement an SQL query where I would be able to suppress all
> information from a registered user. I am currenlty able to suppress
> everything except the user role. The name of the role is present in a table
> and so, I would want to perform something like this :
> DROP ROLE (SELECT ...)
> but this is not considered as valid, as DROP ROLE is expecting a name and
> not a text field. So, I tried the following, but with no success :
> DROP ROLE CAST((SELECT...) AS name)
> 
> So, does someone knows how to handle this problem ?
> 

You can't do it with only one query. You need to use two queries: the
SELECT, and then the DROP.


-- 
Guillaume
  http://blog.guillaume.lelarge.info
  http://www.dalibo.com