On 11/05/12 12:46 PM, Moshe Jacobson wrote:
> Is there any practical difference between defining a column as a
> varchar(n) vs. a varchar vs. a text field?
varchar(n) has a length constraint on it. the other two don't.
otherwise all three are identical in implementation.
>
> I've always been under the impression that if I am wanting to index a
> varchar column, it is better to set a maximum length. Is this correct?
no, unless you want to ensure the field will never exceed a specified
length.
> But more importantly, what's the practical difference between varchar
> with no limit and text?
none.
--
john r pierce N 37, W 122
santa cruz ca mid-left coast
