Re: EXPLAIN doesn't show the actual function expression for FunctionScan

Поиск
Список
Период
Сортировка
От Dimitri Fontaine
Тема Re: EXPLAIN doesn't show the actual function expression for FunctionScan
Дата
Msg-id 36CE8AEB-A9D7-4373-8312-6ADC74196053@hi-media.com
обсуждение исходный текст
Ответ на Re: EXPLAIN doesn't show the actual function expression for FunctionScan  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: EXPLAIN doesn't show the actual function expression for FunctionScan  (Tom Lane <tgl@sss.pgh.pa.us>)
Список pgsql-hackers
Argument List?

--
dim

Le 24 août 2010 à 18:06, Tom Lane <tgl@sss.pgh.pa.us> a écrit :

> I wrote:
>> Robert Haas <robertmhaas@gmail.com> writes:
>>> If you try to put all that on the same line, I think it might get
>>> awkwardly long.  Perhaps something like:
>
>>> Function Scan on function_name
>>> Expression: function_name(function_arg1, function_arg2, ...)
>
>> Yeah, that's what I had in mind, but I'm still fumbling for the right
>> label.  "Expression" seems a bit too generic.
>
> How about "Function Call"?
>
> A moment's hacking later:
>
> regression=# explain verbose SELECT lv|| op|| rv FROM unnest(ARRAY[
>        ROW('1.2.2'::semver,  '='::text, '1.2.2'::semver),
>        ROW('1.2.23', '=', '1.2.23')
>    ]) AS f(lv semver, op text, rv semver);
>                                                           QUERY PLAN
         
>
--------------------------------------------------------------------------------------------------------------------------------
> Function Scan on pg_catalog.unnest f  (cost=0.00..1.50 rows=100 width=96)
>   Output: (((lv)::text || op) || (rv)::text)
>   Function Call: unnest(ARRAY[ROW(('1.2.2'::text)::semver, '='::text, ('1.2.2'::text)::semver), ROW('1.2.23', '=',
'1.2.23')])
> (3 rows)
>
> Look reasonable?
>
>            regards, tom lane
>
> --
> Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org)
> To make changes to your subscription:
> http://www.postgresql.org/mailpref/pgsql-hackers


В списке pgsql-hackers по дате отправления:

Предыдущее
От: Marko Tiikkaja
Дата:
Сообщение: Re: gSoC add MERGE command new patch -- merge_v104
Следующее
От: Fujii Masao
Дата:
Сообщение: Re: Backups from the standby (Incrementally Updated Backups), open item