Re: proposal - assign result of query to psql variable
От | Pavel Stehule |
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Тема | Re: proposal - assign result of query to psql variable |
Дата | |
Msg-id | CAFj8pRCMBr4-9k76bEi-pra-3haBHRiBZfjFcdoxDNSsOqZ1bA@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: proposal - assign result of query to psql variable (David Fetter <david@fetter.org>) |
Ответы |
Re: proposal - assign result of query to psql variable
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Список | pgsql-hackers |
2012/7/26 David Fetter <david@fetter.org>: > On Thu, Jul 26, 2012 at 01:36:17AM -0400, Tom Lane wrote: >> Pavel Stehule <pavel.stehule@gmail.com> writes: >> > \eset variable [, variable [..]] query -- it raise exception when >> > more than one row is returned or when no row is returned >> >> Better would be a variant on \g, that is you type in the query and >> then tell it where to put the result. We have learned the hard way >> that putting SQL commands into the arguments of backslash commands >> is a horrid idea. Maybe >> >> select x,y,... from ... >> \gset var1 var2 ... > > How about > > \gset var1,,,var2,var3... > I don't like this - you can use fake variable - and ignoring some variable has no big effect on client Pavel > The above shows how one would skip assigning variables in the target > list, which one might want to do. > > Cheers, > David. > -- > David Fetter <david@fetter.org> http://fetter.org/ > Phone: +1 415 235 3778 AIM: dfetter666 Yahoo!: dfetter > Skype: davidfetter XMPP: david.fetter@gmail.com > iCal: webcal://www.tripit.com/feed/ical/people/david74/tripit.ics > > Remember to vote! > Consider donating to Postgres: http://www.postgresql.org/about/donate
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