gistfile1.php

<?php

db_set_active('knigi');

$result = db_query('SELECT nid FROM node where uid <> 0');
$nids = array();

while ($row = db_fetch_array($result)) {
  $nids[] = $row['nid'];
}

$node = node_load($nids[0]);

print '<pre>';
print_r($node);
print '</pre>';

db_set_active('km');

$new_node = null;

$new_node->title = $node->title;
$new_node->body = $node->body;
$new_node->uid = 1;
$new_node->status = 1;
$new_node->created = $node->created;
$new_node->updated = $node->updated;

// $new_node->...

node_save($new_node);

echo $new_node->nid;