TaskProvider::makeArSqlSelect

private function makeArSqlSelect(): self
{
	foreach ($this->arSelect as $field)
	{
		$field = strtoupper($field);
		if (array_key_exists($field, $this->arFields))
			$this->arSqlSelect[$field] = $this->arFields[$field]." AS ".$field;
	}

	if (!sizeof($this->arSqlSelect))
	{
		$this->arSqlSelect = "T.ID AS ID";
	}

	return $this;
}