Database driver error

Your query absolutely right. i don't know why it is not working.please use below query as a alternative.

$row1 = $this->db->query("SELECT COUNT(*) AS `numrows` FROM `lids` WHERE `lids`.`date_inspection` >= '2016-10-14 00:00:00' AND `lids`.`date_inspection` <= '2016-10-15 23:59:59'")->row();

$row2 = $this->db->query("SELECT COUNT(*) AS `numrows` FROM `lids` WHERE `date_inspection` >= '2016-10-14 00:00:00' AND `date_inspection` <= '2016-10-15 23:59:59'")->row();

$row3 = $this->db->query("SELECT COUNT(*) AS numrows FROM lids WHERE date_inspection BETWEEN '2016-10-14 00:00:00' and '2016-10-15 23:59:59'")->row();

print_r($row1->numrows);
print_r($row2->numrows);
print_r($row3->numrows);

Above three query is may helpful.