system/Database/MySQLi/Connection.php
public function execute(string $sql)
	{
		while ($this->connID->more_results())
		{
			$this->connID->next_result();
			if ($res = $this->connID->store_result())
			{
				$res->free();
			}
		}

		return $this->connID->query($this->prepQuery($sql));
	}
public function execute(string $sql)
	{
		while ($this->connID->more_results())
		{
			$this->connID->next_result();
			if ($res = $this->connID->store_result())
			{
				$res->free();
			}
		}

		return $this->connID->query($this->prepQuery($sql));
	}
Executes the query against the database.

@param string $sql

@return mixed