Search Postgresql Archives

varchar vs. text + constraint/triggers was: Help request to improve function performance

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Thu, 23 Apr 2009 11:00:59 +0200
Karsten Hilbert <Karsten.Hilbert@xxxxxxx> wrote:

> On Thu, Apr 23, 2009 at 12:02:13AM +0100, Seref Arikan wrote:
> 
> > I have a set of dynamically composed objects represented in
> > Java, with string values for various attributes, which have
> > variable length. In case you have suggestions for a better type
> > for this case, it would be my pleasure to hear about them.
> 
> Seref, he's suggesting you use TEXT instead of
> VARCHAR(something). In PG it's actually usually *less*
> overhead to use the unbounded text datatype (no length check
> required).
> 
> Length checks mandated by business logic can be added by
> more dynamic means -- check constraints, triggers, etc which
> allow for less invasive change if needed.

Could you point us to some example of a constraint/trigger (etc...)
that is going to provide the same checking of varchar and explain
(if the code/example... doesn't make it clear) why it should be
faster or less invasive?

thanks

-- 
Ivan Sergio Borgonovo
http://www.webthatworks.it


-- 
Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-general

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Postgresql Jobs]     [Postgresql Admin]     [Postgresql Performance]     [Linux Clusters]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Postgresql & PHP]     [Yosemite]
  Powered by Linux