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From: Tim Dudgeon <tdudgeon.ml@gmail.com>
To: pgsql-sql@postgresql.org
Subject: generating json without nulls
Date: Thu, 07 May 2015 11:56:42 +0100
Message-ID: <554B44EA.4070803@gmail.com> (raw)
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Hi All!
I'm using the postgres json functions to generate json for values in a 
table.
Something like this:

SELECT row_to_json(a_table) FROM a_table

But my data has lots of null values and that results in json attributes 
like this:

"colname":null

I want to exclude those values from the json and only include non-null 
values.
Any idea how to best go about this?

Tim


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