MySQL:
SELECT * FROM EVENT WHERE eventId IN(443,419,431,440,420,414,509) ORDER BY INSTR(',443,419,431,440,420,414,509,',CONCAT(',',eventId,','))
Oracle:
SELECT NAME FROM order WHERE oderid IN (111,222,333,444,555,666) ORDER BY INSTR('111,222,333,444,555,666',orderid)