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Date: Wed, 31 May 2000 20:33:36 -0400
From: Joseph Shraibman <jks@selectacast.net>
Organization: Xtenit
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To: "pgsql-interfaces@postgreSQL.org" <pgsql-interfaces@postgreSQL.org>
Subject: Re: Exception with aggregate
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Joseph Shraibman wrote:
> 
> When I have a sql query like " select count(field) as countname from
> tablename " I get:
> 
> Wed May 31 19:56:22 EDT 2000:ExecGroup-2:out:No class found for unknown.
> Wed May 31 19:56:22 EDT 2000:ExecGroup-2:out:No class found for unknown.
> Wed May 31 19:56:22 EDT 2000:ExecGroup-2:out:   at
> org.postgresql.Connection.getObject(Connection.java:621)
> Wed May 31 19:56:22 EDT 2000:ExecGroup-2:out:   at
> org.postgresql.jdbc2.ResultSet.getObject(ResultSet.java:740)
> 
> If I have just " select count(field) from tablename " I have no problem.

My mistake.  The part that was causing the problem was this:
case when a.rules is null or a.rules = '' then 'not set' else 'set' end
as text

I fixed it by changing it to this:
"case when a.rules is null or a.rules = '' then 'not set'::text else
'set'::text end as text "