Daniel,
(this is OT but it might be of some help)

D> Yes it does. NULL is of type variant and means the same thing as in
D> Firebird. And, I use it just to check if a variant contains data.

Tip: Use VarIsNull to check for variant nullness, you'll be on a much
safer side. Tests against Null might raise exceptions depending on RTL
settings (see the vars in the Variants unit).

Ciao
--
Nando Dessena
mailto:nandod@...