The following lines contain the word 'select', 'insert', 'update' or 'delete':
SELECT job.job_id,
job.job_definition_id,
to_char(asg.effective_start_date, 'DD-MON-YYYY'),
to_char(asg.effective_end_date, 'DD-MON-YYYY')
FROM per_jobs job,
per_all_assignments_f asg
WHERE asg.person_id = p_person_id
AND asg.job_id = job.job_id
AND asg.period_of_service_id = p_period_of_service_id
AND asg.primary_flag = 'Y'
ORDER BY asg.effective_start_date;