From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
---|---|
To: | Andrew Dunstan <andrew(at)dunslane(dot)net> |
Cc: | Peter Geoghegan <pg(at)heroku(dot)com>, justin(dot)vanwinkle(at)gmail(dot)com, pgsql-bugs <pgsql-bugs(at)postgresql(dot)org> |
Subject: | Re: BUG #11207: empty path will segfault jsonb #> |
Date: | 2014-08-21 02:50:17 |
Message-ID: | 28953.1408589417@sss.pgh.pa.us |
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Lists: | pgsql-bugs |
Andrew Dunstan <andrew(at)dunslane(dot)net> writes:
> On 08/20/2014 07:30 PM, Tom Lane wrote:
>> 1. #> now returns the input object if the RHS array is empty;
> So will
> val #>> '{}'
> now return a dequoted bare scalar string? I think that's where the OP
> actually came into this.
Hm ... as the patch stands, you get the same thing from either operator:
regression=# select '"foo"'::json #> '{}';
?column?
----------
"foo"
(1 row)
regression=# select '"foo"'::json #>> '{}';
?column?
----------
"foo"
(1 row)
If you think the latter should be dequoted, we can probably make it so.
I'm not entirely convinced that's right though: you could argue that
dequoting is a function of the -> operator and we applied zero such
operators. (I'm not wedded to that argument, just raising it as food
for thought.) Comments?
regards, tom lane
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