fantastic : a lot of clever suggest !
i don't know if it resolve the problem but i'm sure is all goog idea
the type for string is 10 (I remember)

the idea to create sql statment and call them with execute metode is very good.
I start to realiza this implementation and i let you know, as soon aso possible, about the result

thanks a lot
Massimiliano

Keep us updated on how things are going. I hope that I am on the right
track to solve your issue. I will wait for your reply.....

The Frog