Finder_sql and will_paginate cause sql truncation

Hey,

So, I've been working on a rebuild of a complex query (its a friendship style relationship between user accounts). Formerly it was stored using two tables (in addition to the user table), with three records total to represent a single relationship (yes, pretty horrible, and it is having a huge negative impact on our performance due to table bloat).

So, my solution was a single table that would store a single record for each relationship; however, this means that the default behavior in rails (of using a single foreign key in a has_many relationship) wasn't going to work. So, my finder actually looks like:

  has_many :friends, :class_name => "User", :finder_sql => 
  "SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
   SELECT users.*, friends.position_one AS position FROM friends
    LEFT OUTER JOIN users ON users.id = friends.person_two_id
    WHERE friends.person_one_id = #{id} 
   UNION
   SELECT users.*, friends.position_two AS position FROM friends
    LEFT OUTER JOIN users ON users.id = friends.person_one_id
    WHERE friends.person_two_id = #{id}
   ORDER BY friends.position;
   SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ;"

So, now onto the problem (well, it is possible that I'm just missing something and there is a way to do that type of relationship in Rails, but if there is then I'm either blind or its horribly obscure).

Whenever I try to call paginate on that function I get an error (see below), where the error is caused by the finder_sql being truncated to 128 characters.

The error log is located here

Any help is appreciated. I also realize that this may not even be a will_paginate bug, but something related to an issue within Rails or Ruby itself; however, I figured that starting with the plugins first would be the best place :)

Cheers and thanks,

James