On Thu, Apr 14, 2011 at 10:56 PM, Pavel Stehule <pavel.steh...@gmail.com> wrote: > 2011/4/15 Jim Nasby <j...@nasby.net>: >> On Apr 14, 2011, at 4:20 PM, Kevin Grittner wrote: >>> Tom Lane <t...@sss.pgh.pa.us> wrote: >>>> Robert Haas <robertmh...@gmail.com> writes: >>> >>>>> So far the most promising proposal I've seen seems to be to let >>>>> id mean the parameter called id only when it can't refer to >>>>> anything in the query. >>> >>>> Yeah, I've come round to that position too. I think allowing >>>> parameter names to be checked only after query names is probably >>>> the best answer. >>> >>> +1 >>> >>> That seems the most useful and least surprising approach to me. >> >> As part of this, can we also allow specifying an alias for the function >> name? That would make it far less onerous to disambiguate parameters. >> Unfortunately we obviously couldn't use AS as the keyword for this alias; >> maybe we could use ALIAS instead? IE: >> >> CREATE FUNCTION function_with_really_really_descriptive_name ( >> some_parameter int >> ) RETURNS int LANGUAGE SQL ALIAS fwrrdn AS $$ >> SELECT fwrrdn.some_parameter >> $$; >> -- > > I see this can be problem for other languages - mainly for PLpgSQL. > There should be aliases supported too. And this small feature can be > terible when somebody will try to port your code to other platforms. > Personally I am thinking, so it isn't necessary > > -1
I don't much like Jim's syntax suggestion (the alias really ought to be declared within the function body, I think, not added to the CREATE FUNCTION statement) but I don't necessarily think it's a bad idea. What would be even better, in my view, is having a short alias that is defined by default, but all previous proposals in this vein have been shot down by Tom and Andrew. As a practical matter, though, I think what Jim is talking about speaks to a real need - people want to make SQL function names long and descriptive, but they do NOT want to spell out that long function name 16 times inside the function body. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
