where clause string literal bug fix
broader compatibility with pdo driver revisions
works locally with pdo_pgsql 1.0.2
but not on staging server with pdo_pgsql 1.0.2 revision $Id: pdo_pgsql.c,v 1.7.2.11 2006/03/14 10:49:18 edink Exp $

Warning: PDO::__construct(): SQLSTATE[IM001]: Driver does not support this function: driver does not support setting attributes in skyphp/3.0-beta/lib/Sky/Db.php on line 41