On Sat, Oct 28, 2017 at 3:46 PM, Pavel Stehule <pavel.steh...@gmail.com> wrote:
> 2017-09-22 21:31 GMT+02:00 Pavel Stehule <pavel.steh...@gmail.com>: > >> >> >> 2017-09-22 21:12 GMT+02:00 Peter Eisentraut < >> peter.eisentr...@2ndquadrant.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