Compare the number of inspections under toxic items and no-smoking regulations.
under toxic items refers to category = 'Toxic Items'; no-smoking regulations refers to category = 'No Smoking Regulations'
SELECT COUNT(CASE WHEN T2.category = 'Toxic Items' THEN T1.inspection_id END) AS Tox_nums , COUNT(CASE WHEN T2.category = 'No Smoking Regulations' THEN T1.inspection_id END) AS NosmoNums FROM violation AS T1 INNER JOIN inspection_point AS T2 ON T1.point_id = T2.point_id