Greetings.

I have a question regarding performance of certain datatypes:

I have a field where I will store my clients phone numbers. I know that this field will never exceed 15 characters, and I will store only numbers here (no dashes, dots, etc...), so I was wondering:

Wich type is faster: NUMERIC(15,0) or VARCHAR(15)? Are there any storage differences between them?

TIA,

-- 
Er Galvão Abbott
Desenvolvedor Web
http://www.galvao.eti.br/
galvao@galvao.eti.br