> It is a context variable that is calculated on demand by the

server. You

> can select CURRENT_DATE (or any other context variable) as an

output column

> expression in any query. You can also insert it directly into

database

> DATE columns and use it directly in triggers, stored procedures and
> constraints...
>
> heLen

Why I must use "from RDB$DATABASE", if the CURRENT_DATE isnt't a
field of this table?
How can I view a list of the context variables? I alredy has look for
this in the documentation. This functions is in documentation? Where,
in the documentation, or other place, can I found the integer for the
week days?