/**
* 增加一个 and where 的字句查询（基于查询器）
*
* @param $this $query
* @param string $boolean
* @param bool $not
* @return $this
*/
public function addWhereExistsQuery(Builder $query, $boolean = 'and', $not = false)
{
$type = $not ? 'NotExists' : 'Exists';
$this->wheres[] = compact('type', 'operator', 'query', 'boolean');
$this->addBinding($query->getBindings(), 'where');
return $this;
}
