/**
* @return string
*/
private function selectColumn()
{
$columns = $this->query->columns;
if (is_null($columns)) {
$columns = [Query::sql("*")];
}
if (is_string($columns)) {
$columns = array($columns);
}
foreach ($columns as $key => $val) {
if ($columns[$key] instanceof Query) {
$columns[$key] = $columns[$key]->query;
} else {
$columns[$key] = $this->getFormattedTableOrColumn($val);
}
}
return implode(', ', $columns);
}
/**
* @param $query
* @param null $params
* @return $this
*/
public function sql($query, $params = null)
{
$this->query = $this->query->sql($query, $params);
return $this;
}
