The following lines contain the word 'select', 'insert', 'update' or 'delete':
select VENDOR_CONTACT_ID, LAST_UPDATE_DATE, LAST_UPDATED_BY,
VENDOR_SITE_ID,
LAST_UPDATE_LOGIN,
CREATION_DATE, CREATED_BY, INACTIVE_DATE,
FIRST_NAME, MIDDLE_NAME, LAST_NAME, PREFIX, TITLE, MAIL_STOP,
AREA_CODE, PHONE
from PO_VENDOR_CONTACTS
where VENDOR_CONTACT_ID = nvl(vndor_contact_id, VENDOR_CONTACT_ID)
and VENDOR_SITE_ID = nvl(vndr_sit_id, VENDOR_SITE_ID)
and last_update_date between
nvl(st_date, last_update_date)
and nvl(en_date, last_update_date);