SELECT CASE WHEN COALESCE(b.totalCoupons, 0) > 3 THEN '(Important) '
WHEN IsHighPriority = 1 THEN '(High Priority) '
ELSE ''
END + a.Name AS CompanyName
FROM Company a
LEFT JOIN
(
SELECT Name, COUNT(*) totalCoupons
FROM Company
GROUP BY Name
) b ON a.name = b.name