From: | Raphael Bauduin <rblists(at)gmail(dot)com> |
---|---|
To: | PostgreSQL General <pgsql-general(at)postgresql(dot)org> |
Subject: | returning json object with subset of keys |
Date: | 2014-01-08 12:37:04 |
Message-ID: | CAONrwUGMQthsut_F8X4CBGQDuKa5=A+AtmxSXb2FdOXh5PD3Qg@mail.gmail.com |
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Lists: | pgsql-general |
Hi
I'm using the json functionalities of postgresql 9.3.
I have a query calling json_populate_recordset like this:
json_populate_recordset(null::product, event->'products')
but it returns an error:
ERROR: cannot call json_populate_recordset on a nested object
There is indeed one key in event->'products' giving access to an array of
objects.
Is there a way to specify which keys to keep from the object? I haven't
found ti in the docs.
Here is pseudo code of what I'd like to do:
json_populate_recordset(null::product, event->'products' WITH ONLY KEYS
{'f1','f2'})
Thx
--
Web database: http://www.myowndb.com
Free Software Developers Meeting: http://www.fosdem.org event->'products'
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