Re: pgsql: Fix documentation of argument type of json_agg and jsonb_agg

On 12/22/2014 02:34 PM, Tom Lane wrote:
> Andrew Dunstan <andrew@dunslane.net> writes:
>> Fix documentation of argument type of json_agg and jsonb_agg
>> json_agg was originally designed to aggregate records. However, it soon
>> became clear that it is useful for aggregating all kinds of values and
>> that's what we have on 9.3 and 9.4, and in head for it and jsonb_agg.
>> The documentation suggested otherwise, so this fixes it.
> Claiming that the argument type is "expression" is not a fix.  I don't
> mind using that terminology in the first table column, but the second
> column is supposed to be the truth not handwaving.
>
> The actual declaration of the argument type is "anyelement", and I think
> we use that to document other such functions.
>
>

Oh, I thought I had seen "expression" there. It looks like we're using
"any" elsewhere, so I'll use that. While I'm at it I'll remove the quote
marks around the arguments to json_object_agg().