Re: Re: proposal - psql: possibility to specify sort for describe commands, when size is printed

On Sat, Oct 28, 2017 at 3:46 PM, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
wrote:

> 2017-09-22 21:31 GMT+02:00 Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>:
>
>>
>>
>> 2017-09-22 21:12 GMT+02:00 Peter Eisentraut <
>> peter(dot)eisentraut(at)2ndquadrant(dot)com>:
>>
>>> On 9/22/17 09:16, Pavel Stehule wrote:
>>> > Example: somebody set SORT_COLUMNS to schema_name value. This is
>>> > nonsense for \l command
>>> >
>>> > Now, I am thinking so more correct and practical design is based on
>>> > special mode, activated by variable
>>> >
>>> > PREFER_SIZE_SORT .. (off, asc, desc)
>>> >
>>> > This has sense for wide group of commands that can show size. And when
>>> > size is not visible, then this option is not active.
>>>
>>> Maybe this shouldn't be a variable at all. It's not like you'll set
>>> this as a global preference. You probably want it for one command only.
>>> So a per-command option might make more sense.
>>>
>>
>> Sure, I cannot to know, what users will do. But, when I need to see a
>> size of objects, then I prefer the sort by size desc every time. If I need
>> to find some object, then I can to use a searching in pager. So in my case,
>> this settings will be in psqlrc. In GoodData we used years own
>> customization - the order by size was hardcoded and nobody reported me any
>> issue.
>>
>> Alexander proposed some per command option, but current syntax of psql
>> commands don't allows some simple parametrization. If it can be user
>> friendly, then it should be short. From implementation perspective, it
>> should be simply parsed. It should be intuitive too - too much symbols
>> together is not good idea.
>>
>> Maybe some prefix design - but it is not design for common people
>> (although these people don't use psql usually)
>>
>> '\sort size \dt ?
>>
>> \dt:sort_by_size
>> \dt+:sort_by_size ?
>>
>> I don't see any good design in this direction
>>
>>
> I though about Alexander proposal, and I am thinking so it can be probably
> best if we respect psql design. I implemented two command suffixes
> (supported only when it has sense) "s" sorted by size and "d" as descent
>
> so list of tables can be sorted with commands:
>
> \dt+sd (in this case, the order is not strict), so command
> \dtsd+ is working too (same \disd+ or \di+sd)
>
> These two chars are acceptable. Same principle is used for \l command
>
> \lsd+ or \l+sd
>
> What do you think about it?
>

I think \lsd+ command would be another postgres meme :)
BTW, are you going to provide an ability to sort by name, schema?

------
Alexander Korotkov
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company