--- Dennis Gearon <gearond@cvc.net> wrote:
> how do you mark it immutable?
>
Check the "create function" section in the manual,
under "sql commands". The equivalent syntax for
versions prior to 7.3 is "with (iscachable)", which
you will see if you are running 7.2 or earlier.
We've just heard from one of the experts that you
should not have a problem with just "upper". The
wrapping technique will probably be necessary for
custom functions however.
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