Re: hstore improvements?

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От Andrew Gierth
Тема Re: hstore improvements?
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Msg-id 87zlfpgom8.fsf@news-spur.riddles.org.uk
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Ответ на Re: hstore improvements?  ("David E. Wheeler" <david@kineticode.com>)
Ответы Re: hstore improvements?
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>>>>> "David" == "David E Wheeler" <david@kineticode.com> writes:
> On Mar 13, 2009, at 11:06 AM, Andrew Gierth wrote:>> If there's any other features that people find notably missing>>
fromhstore, I could stick them in too; any requests?
 
David> Can you create slices? That is, create a new hstore as aDavid> subset of an existing hstore?

ooh. good point. What would be a good operator for that?

I'm thinking that (hstore -> text[]) should probably return text[],
and maybe (hstore => text[]) returning hstore?

i.e.

select ('a=>1,b=>2,c=>3'::hstore) -> ARRAY['a','b']; -- returns '{1,2}'

select ('a=>1,b=>2,c=>3'::hstore) => ARRAY['a','b']; -- returns 'a=>1,b=>2'

(by analogy to the existing operators -> for lookup and => for
construction)

-- 
Andrew (irc:RhodiumToad)


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