Re: hstore improvements? - Mailing list pgsql-hackers

From Andrew Gierth
Subject Re: hstore improvements?
Date
Msg-id 87mybpgllw.fsf@news-spur.riddles.org.uk
Whole thread Raw
In response to Re: hstore improvements?  ("David E. Wheeler" <david@kineticode.com>)
Responses Re: hstore improvements?  ("David E. Wheeler" <david@kineticode.com>)
List pgsql-hackers
>>>>> "David" == "David E Wheeler" <david@kineticode.com> writes:
>> 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)
David> Is a more Perlish syntax out of the question?

Yes. Sorry.
David> SELECT ('a=>1,b=>2,c=>3'::hstore)['a', 'b'];David>   -- returns '{1,2}'

That would require integrating hstore into core - array subscripting
isn't a user-definable operation.
David> select ('a=>1,b=>2,c=>3'::hstore){'a','b'};David>   -- returns 'a=>1,b=>2'

And that would require changing the parser...

-- 
Andrew (irc:RhodiumToad)


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