year 2007.
Then we must find all <code>+Pos</code> (position) objects referring to that
item and at the same time belonging to orders of the year 2007 (see the class
definition for <code>+Pos</code> in "app/er.l"). The number of sold pieces is
then in the <code>cnt</code> property of the <code>+Pos</code> objects.

<p>As shown in the complete <code>select</code> below, we will hold the item
number in the variable <code>@Nr</code> and the date range for the year in
<code>@Year</code>.

<p>Now, all positions 