can you go onto some Postgresql forums and ask there? this is a
Postgresql-specific issue.
On Thu, Mar 21, 2019 at 8:44 AM Scheck David <da...@sphax.it> wrote:
> In fact it's a function in postgresql which catch all urls and store it in
> a field. but it's not what I'm searching for. I just have to create an
> index gin and I still don't know how to. I'm just stuck because I don't
> understand how to create index on a nested field.
>
> op.create_index('ix_law_search_vector', 'law', ['search_vector'],
> unique=False, postgresql_using='gin')
>
> my model is like
> Image
> metadata = JSONB
>
> JSONB field :
> { 'updated_by': {'uri': 'https://alink', 'description': 'Beeldbank'}},
> 'akey': [{'uri': 'alink'}], 'aanduidingsobjecten': []
> }
>
> And I need to optimise the search through all the keys "uri".
>
> because right now we do something like that :
>
> filter(
> or_(
>
> Image.image_metadata['systemfields']['updated_by']['uri'].astext == uri,
> Image.image_metadata.contains({'akey': [{'uri': uri}]}),
> ImageState.actor_uri == uri
> ))
>
> and it takes 70s on a database with 270000 records. and that's just not
> possible.
>
> I've another query where it's 2 sec (I don't understand that) :
> filter(Image.image_metadata.contains({'akey': [{'uri': uri}]}))
>
>
> --
>
> With kindest regards,
>
>
> *David SCHECK*
>
> PRESIDENT/DEVELOPER
>
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>
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> SQLAlchemy -
> The Python SQL Toolkit and Object Relational Mapper
>
> http://www.sqlalchemy.org/
>
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--
SQLAlchemy -
The Python SQL Toolkit and Object Relational Mapper
http://www.sqlalchemy.org/
To post example code, please provide an MCVE: Minimal, Complete, and Verifiable
Example. See http://stackoverflow.com/help/mcve for a full description.
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