phprs\ezsql\impls\GroupByImpl::groupBy PHP Method

    public static function groupBy($context, $column)
    {
        $context->appendSql("GROUP BY {$column}");
    }

 /**
  * groupBy('column') => "GROUP BY column"
  * @param string $column
  * @return \phprs\ezsql\rules\select\HavingRule
  */
 public function groupBy($column)
 {
     GroupByImpl::groupBy($this->context, $column);
     return new HavingRule($this->context);
 }