SQL-92 syntax question?

Is the following syntax valid in SQL-92 (Oracle allows it):

SELECT a, exprFunc1(b), exprFunc2(c) FROM ...
GROUP BY a, exprFunc1(b);

exprFunc1() is say, a DayOfWeek() method returning the day of week of a given date.

prashant balepur
DFI*Aeronomics Received on Wed Jan 14 1998 - 00:00:00 CST