The following lines contain the word 'select', 'insert', 'update' or 'delete':
PROCEDURE select_summary(x_po_header_id IN NUMBER,
x_po_line_id IN NUMBER,
x_line_location_id IN NUMBER,
x_total IN OUT NUMBER,
x_total_rtot_db IN OUT NUMBER) IS
BEGIN
select nvl(sum(cost_amount), 0), nvl(sum(cost_amount), 0)
into x_total, x_total_rtot_db
from cpg_cost_dtl
where po_header_id = x_po_header_id
and po_line_id = x_po_line_id
and line_location_id = x_line_location_id;
END SELECT_SUMMARY;