It shows the page unresponsive after I enter the below mentioned query.

[chetan-maheshwari]

When I was solving the below question :

Show patient_id, first_name, last_name from patients whose does not have any records in the admissions table. (Their patient_id does not exist in any admissions.patient_id rows.)

and the moment I ran this incomplete query :
"select
p.patient_id,
p.first_name,
p.last_name
from patients p
left join admissions a"

the site lagged and showed me the unresponsive page error .

I have attached the screenshots of the error.