Set up the query for this argument.
The argument sent may be found at $this->argument.
Overrides Numeric::query
public function query($group_by = FALSE) {
$this
->ensureMyTable();
$placeholder = $this
->placeholder();
$this->query
->add_where_expression(0, "{$this->tableAlias}.uid = {$placeholder} OR ((SELECT COUNT(*) FROM {node_revision} nr WHERE nr.uid = {$placeholder} AND nr.nid = {$this->tableAlias}.nid) > 0)", array(
$placeholder => $this->argument,
));
}