Re: psql: add \pset true/false

2015-11-12 17:41 GMT+01:00 Matthijs van der Vleuten <matthijs@zr40.nl>:

>
> On 12 Nov 2015, at 14:21, Brendan Jurd <direvus@gmail.com> wrote:
>
> On Fri, 30 Oct 2015 at 00:51 Tom Lane <tgl@sss.pgh.pa.us> wrote:
>
>> The really key argument that hasn't been addressed here is why does such
>> a behavior belong in psql, rather than elsewhere?  Surely legibility
>> problems aren't unique to psql users.  Moreover, there are exactly
>> parallel facilities for other datatypes on the server side: think
>> DateStyle or bytea_output.  So if you were trying to follow precedent
>> rather than invent a kluge, you'd have submitted a patch to create a GUC
>> that changes the output of boolout().
>>
>
> I find Tom's analogy to datestyle and bytea_output convincing.
>
> +1 for a GUC that changes the behaviour of boolout.
>
>
> -1 for changing boolout(). It will break anything that receives boolean
> values from the server. How a client is going to display values (of any
> type) is logic that should belong in the client, not in the protocol.
>

This is not fully valid, because transformation from binary to text is
processed on server side. And client side transformation is easy only for
scalar values.

Regards

Pavel