The Google Datastore adapter doesn't use GQL but instead uses the Python
NDB datastore API. I think you can add the distinct=True argument to the
.query() method (at least for projection queries), so you might try
subclassing pydal.adapters.google_adapters.GoogleDatastoreAdapter and
customize its .select_raw method to allow use of the "distinct" argument.
Anthony
On Monday, October 26, 2015 at 7:47:44 AM UTC-4, Carl Hunter Roach wrote:
>
> Here's my Web2py-driven Python:
>
> db = current.db
> rows = db().select(db.person.name, distinct=db.person.name)
> for row in rows:
> logging.info('name: %s' % row.name)
>
> This logs all rows from person, listing many duplicate name values.
>
> The equivalent GQL I've tried is:
>
> rows = gqldb.GqlQuery("SELECT DISTINCT iso31661 FROM geoPt")
> for row in rows:
> logging.info(row._entity['iso31661'])
>
> and this lists each unique name once.
>
> If I have 1,000 rows with 10 unique names then the the first example logs
> 1,000 names and the GQL example, 10.
>
> Can anyone help?
>
>
> On Monday, 26 October 2015 10:57:53 UTC, Carl Hunter Roach wrote:
>>
>> Google slipped in support for DISTINCT in its GQL SELECT in 2013.
>>
>> Are there any plans to add this to the DAL?
>>
>> Ref: https://cloud.google.com/datastore/docs/apis/gql/gql_reference
>>
>
--
Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
---
You received this message because you are subscribed to the Google Groups
"web2py-users" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
For more options, visit https://groups.google.com/d/optout.
