PRO_SDATE, PRO_DURAT)
SELECT PRO_NO
FROM PRO
WHERE ( PRO_SDATE, PRO_DURAT) OVERLAPS
(DATE '2000-01-15', DATE '2002-12-31');
Введение в модель данных SQL
SELECT PRO_NO
FROM PRO
WHERE ( PRO_SDATE, PRO_DURAT) OVERLAPS
(DATE '2000-01-15', DATE '2002-12-31');