src/Builder/Syntax/WhereWriter.php
protected function getColumnNames($columns)
    {
        $columnNames = [];
        foreach ($columns as &$column) {
            $columnNames[] = $this->columnWriter->writeColumn($column);
        }

        return \implode(', ', $columnNames);
    }
protected function getColumnNames($columns)
    {
        $columnNames = [];
        foreach ($columns as &$column) {
            $columnNames[] = $this->columnWriter->writeColumn($column);
        }

        return \implode(', ', $columnNames);
    }
@param $columns

@return string