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<?php declare(strict_types=1);
namespace Janisbiz\LightOrm\Dms\MySQL\QueryBuilder\Traits;
use Janisbiz\LightOrm\Dms\MySQL\Enum\ConditionEnum;
use Janisbiz\LightOrm\Dms\MySQL\QueryBuilder\QueryBuilderException;
trait GroupByTrait
{
/**
* @var array
*/
protected $groupBy = [];
* @param array|string $groupBy
*
* @return $this
* @throws QueryBuilderException
public function groupBy($groupBy)
if (empty($groupBy)) {
throw new QueryBuilderException('You must pass $groupBy to groupBy method!');
}
if (!\is_array($groupBy)) {
$groupBy = [$groupBy];
$this->groupBy = \array_merge($this->groupBy, $groupBy);
return $this;
* @return null|string
protected function buildGroupByQueryPart(): ?string
return empty($this->groupBy)
? null
: \sprintf('%s %s', ConditionEnum::GROUP_BY, \implode(', ', $this->groupBy))
;
janisbiz /
light-orm
