DUAL Table
The synthetic DUAL table is no longer supported. As an alternative, please write your queries without a FROM clause or use the VALUES syntax.
昔はあったんかい
FROM DUAL の代わりに
SELECT date '2012-08-08' + interval '2' day
FROM (VALUES 1) AS DUAL("")
これでいける
FROM 句がそもそも要らない場合は
VALUES date '2012-08-08' + interval '2' day