我想你想要：
select emp_fn_name, emp_fn_name
from employees e
where not exists (select 1
from schedule s
where s.emp_id = e.id and
s.start < ‘03:00PM’::time and
s.end > ‘02:00PM’::time
);</code>
我有员工表，我试图只查询时间戳范围内的员工。
选择
emp_fn_name，emp_fn_name，
TO_TIMESTAMP（e.start_time，‘HH12：MIAM，PM’）::时间，
…