Re: patch: function xmltable
| От | Pavel Stehule |
|---|---|
| Тема | Re: patch: function xmltable |
| Дата | |
| Msg-id | CAFj8pRAbLOLBUA--8zEBdDTCgV=GW5A080YCceDJwkxrKo0thA@mail.gmail.com обсуждение исходный текст |
| Ответ на | Re: patch: function xmltable (Craig Ringer <craig@2ndquadrant.com>) |
| Список | pgsql-hackers |
Hi
2016-09-23 10:07 GMT+02:00 Craig Ringer <craig@2ndquadrant.com>:
> Did some docs copy-editing and integrated some examples.
Whoops, forgot to attach.
Rather than sending a whole new copy of the patch, here's a diff
against your patched tree of my changes so you can see what I've done
and apply the parts you want.
Note that I didn't updated the expected files.
I applied your patch - there is small misunderstanding. The PATH is evaluated once for input row already. It is not clean in code, because it is executor node started and running for all rows. I changed it in your part of doc.
to a simple value before calling the function. <literal>PATH</>
+ expressions are normally evaluated <emphasis>exactly once per result row ## per input row
+ </emphasis>,
to a simple value before calling the function. <literal>PATH</>
+ expressions are normally evaluated <emphasis>exactly once per result row ## per input row
+ </emphasis>,
Regards
Pavel
--
Craig Ringer http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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