SQL92 compliance

Hi,

Is AS in "SELECT my_column AS my_name FROM my_table" mandatory to be SQL92
compliant?

PostgreSQL requires this keyword by default when defining alias, which might
be good thing.  I mean, I would prefer being notified from a syntax error
than spending a couple of hours wondering why a client application, at the
end of a several data marshalling processes, doesn't get the right data...
For instance MySQL doesn't require it and sometimes that sucks:
 SELECT my_column1        my_column2,        my_column3   FROM my_table

Regards,


--
Daniel