Was soll diese Erweiterung bringen? Gibts da nichts sinnvolleres?

A new set of built-in functions are added to the SQL language in the form of ADD_DAYS, ADD_HOURS, ADD_MINUTES, ADD_SECONDS and ADD_YEARS, making it possible to incorporate business logic into SQL.

Bisher konnte ich das mit "Date/Timestamp +/- n days/months/years/hours/minutes/seconds" doch sowieso tun.