Re: [patch] Proposal for \rotate in psql

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>
Cc: Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, Greg Stark <stark(at)mit(dot)edu>, Daniel Verite <daniel(at)manitou-mail(dot)org>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: [patch] Proposal for \rotate in psql
Date: 2015-09-08 18:13:46
Message-ID: CA+TgmobVE1B1GRZM4vHc1UkyP2PafMyK-tw11yfr9ogc_L0N7g@mail.gmail.com
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On Tue, Sep 8, 2015 at 2:10 PM, David G. Johnston
<david(dot)g(dot)johnston(at)gmail(dot)com> wrote:
> On Tue, Sep 8, 2015 at 1:38 PM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
>> On Mon, Sep 7, 2015 at 5:08 PM, David G. Johnston
>> <david(dot)g(dot)johnston(at)gmail(dot)com> wrote:
>> > Given the role that psql performs I do think \rotate to be the least
>> > problematic choice; I concur that avoiding \pivot is desirable due to
>> > SQL's
>> > usage.
>>
>> I can't agree. Rotating a matrix has a well-defined meaning, and this
>> does something that is not that.
>
> Even though the input data is a table and not a matrix?

Yes, I think rotating a table also has a pretty well-defined meaning.

> Do you have an
> alternative choice you'd like to defend?

Not particularly. If everybody picks one thing they like and argues
strenuously for it, we'll never get anywhere. I think it's enough to
say that I think this particular choice isn't the best. It's not as
if no other suggestions have been made.

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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