This will allow the creation of IN-parts in SQL statements that are compatible to oracle (limitation for elements used by IN is 1000).
The function definition could look like this:

function createIn( $column, $elements ) {}

The mysql version is very simple and just creates an IN part as is. The oracle version could look like this:

function createIn( $column, $elements = array() )
{
$amountElements = count( $elements );
if ( $amountElements > 1000 )
{
$parts = array();
$offset = 0;
while ( $offset < $amountElements )
{
$length = 1000;
if ( $offset + 1000 > $amountElements )

{ $length = $amountElements - $offset; }

$parts[] = $column . ' IN (' . implode( ', ', array_slice( $elements, $offset, $length ) ) . ')';
$offset += $length;
}
return '( ' . implode( ' OR ', $nodeParts ) . ' )';
}
else

{ return $column . ' IN (' . implode( ', ', $elements ) . ')'; }

}

This allows us to reduce redundancies, because at the moment this piece of code is inserted as needed.