json functions

On Wed, Jun 19, 2013 at 2:00 PM, Jayadevan M
<jayadevan.maymala@ibsplc.com> wrote:

I have PostgreSQL 9.2.1. I can see a few json functions under pg_catalog,
json_send, for example. But I can’t find any documentation. Am I missing
something?

I am sure you are looking for that:
http://www.postgresql.org/docs/9.2/static/datatype-json.html
http://www.postgresql.org/docs/9.2/static/functions-json.html

Note that 9.3 has far more features related to json:
http://www.postgresql.org/docs/9.3/static/functions-json.html
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Michael

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On Wed, Jun 19, 2013 at 12:00 AM, Jayadevan M
<jayadevan.maymala@ibsplc.com> wrote:

Hi,

I have PostgreSQL 9.2.1. I can see a few json functions under pg_catalog,
json_send, for example. But I can’t find any documentation. Am I missing
something?

json_send like all send functions is internal. Not all functions
available in the catalog are exposed through SQL -- for example they
may be used to serialize data for transmission over the wire. If you
can handle C you can hunt down the location of the function to see
what it does (which isn't much since json is an already serialized
format).

merlin

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Hi,

json_send like all send functions is internal. Not all functions available in the
catalog are exposed through SQL -- for example they may be used to serialize
data for transmission over the wire. If you can handle C you can hunt down
the location of the function to see what it does (which isn't much since json is
an already serialized format).

OK. That explains it. I was wondering why we have quite a few functions under pg_catalog and just a few in the documentation. Thank you.
Regards,
Jayadevan

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