From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
Cc: | André Fernandes <andre(dot)de(dot)camargo(dot)fernandes(at)hotmail(dot)com>, heikki(dot)linnakangas(at)enterprisedb(dot)com, arhipov(at)dc(dot)baikal(dot)ru, pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: Name column |
Date: | 2010-09-24 15:55:02 |
Message-ID: | 21466.1285343702@sss.pgh.pa.us |
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Lists: | pgsql-hackers |
Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> On Fri, Sep 24, 2010 at 11:43 AM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> -1. There's nothing wrong with the function-as-a-computed-column
>> feature, and it seems likely that taking it away will break applications.
> ... What evidence do we have that anyone is relying on this
> behavior in applications? Every report I've heard of it involved
> someone being surprised that it worked that way.
So? There are lots of surprising things in SQL. And *of course* the
only complaints come from people who didn't know about it, not from
satisfied users.
The reason people don't know about this feature is that it's so poorly
documented --- there's just one mention buried deep in chapter 35 of
the manual, in a place where most people wouldn't think to look for it.
I'm not quite sure where's a better place though.
regards, tom lane
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