Re: PL/pgSQL RENAME functionality in TODOs

On Feb 1, 2007, at 5:08 AM, Pavel Stehule wrote:
> std. use rename only for triggers and variables new and old. It has
> sense. I don't see sense for rename in clasic plpgsql functions.
> There was one reason, rename unnamed $params. But currently plpgsql
> support named params and this reason is obsolete.

Unless things have changed it can be a real PITA to deal with plpgsql
variables that share the same name as a field in a table. IIRC
there's some cases where it's not even possible to unambiguously
refer to the plpgsql variable instead of the field.

For internal variables there's a decent work-around... just prefix
all variables with something like v_. But that's pretty ugly for
parameters... get_user(user_id int) is certainly a nicer interface
than get_user(p_user_id int).

But I think a way to get around that would be to RENAME the arguments
in the DECLARE section, so user_id could become p_user_id under the
covers.

So perhaps there is still a point to RENAME after-all, at least for
paramaters.
--
Jim Nasby jim(at)nasby(dot)net
EnterpriseDB http://enterprisedb.com 512.569.9461 (cell)