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



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