Re: Index using in jsonb query

This is a kind of document, there are many other kinds, with different
json structure. So, a general index would be better.
But even if I create a specific index

CREATE INDEX on datatable (((jsonfield#>>'{path1,path2}')::numeric));

it isn't used in such a query; it is used in this query:

select field1,field2 from datatable where
(jsonfield#>>'{path1,path2}')::numeric = 1000;

Definitely, I didn't find a way to optimize a query that checks a range
in a json subfield.

> On 3/11/2017 3:55 PM, SuperCiccio wrote:
>> Is there a way to make the following query use some sort of indexing?
>>
>> select field1,field2 from datatable where
>> (jsonfield#>>'{path1,path2}')::numeric < 1000;
>
> if the '{path1,path2}' part is constant, I'd think you could create an
> index on (jsonfield #>> '{path1,path2}')::numeric
>
>
> --
> john r pierce, recycling bits in santa cruz