per la select

    * L'idea base è fare
    * 
    * $dal = new Database_Abstraction();
    * $user = $dal->queryObjs( 'User' )
    *             ->where( 'uname' )->like( '%dr%' )
    *             ->and( 'pass' )->equals( 'mypass' )
    *             ->or( 'timestamp' )->gt( '9999999' ) //gt sta per greater than
    *             ->orderBy( 'uname' )->desc();
    * 
    * oppure
    * 
    * $user = $dal->queryObjs( 'User' )
    *             ->where([
    *                    'uname like' => '%dr%',
    *                    'and pass =' => 'mypass',
    *                    'or timestamp >' => '9999999',
    *                    ])
    *             ->orderBy( 'uname', 'desc' );
    * 
    * o ancora la where
    * ->where( 'uname like', '%dr%', 'and pass =', 'mypass' );
    * o semplicemenete
    * ->where( 'uname like ::uname and pass = ::pass ',
    *          array( '::uname' => '%dr%', '::pass' => mypass') );