Hi Adam! Hi Ann!

Many thanks for explanation. I was wondering if my thougts are
wrong or rigth. maybe some day my querys can be so good like the ones
from you and sven too. :oD

Ok. I admit: Select ... from Table_1 where Code > x
is so dumb than 1/x when limit of x is near to zero =´]

Now I will think too more time before use a query with a param in
my delphi program if the param don´t limit the search. It is best
don´t use the where.

Thks Again