[Qgis-user] Spatialite VIEW in QGIS question

[Bernd Vogelgesang]

Am 19.02.2014 20:02, schrieb Olivier Dalang:
> Dear Bernd,
>
> I encountered some similar problems with Spatialite views, but in the 
> end I had it working (sometimes) both in 2.0 and in master... I used 
> the manual method from the spatialite cookbook though (not the 
> Spatialite GUI).
>
> I have no time to test now, but from what I recall, this does not work :
> CREATE VIEW AS SELECT name, geometry FROM table
> while this works :
> CREATE VIEW AS SELECT ROWID, name, geometry FROM table
>
> Maybe you want to give it a last try. I can testify I have some 
> working spatialite views here. Let us know if this works, if not I may 
> give it a better look when I have some time.
>
> Another method is running a SELECT query in the DB Manager in QGIS, 
> and then choosing "Add to map canvas". This is not an actual sqlite 
> view, but depending on what you need, it could be enough.

Hi Olivier,
added ROWID to the VIEW. Same result in QGIS.

I also performed the select in the DB Manager as you proposed. When 
executed, it perfectly show the results i would like to see in the 
attribute table, but what "arrives" in the attribute table after loading 
as layer is again the duplication of the the first entry for ROWID of 
the polygon.

So, this is my select: Anything important missing?

SELECT "a"."ROWID" AS "ROWID", "a"."Geometry" AS "Geometry",
     "b"."zahl" AS "zahl", "b"."jahr" AS "jahr", "b"."art" AS "art",
     "b"."sta" AS "sta"
FROM "ASK_VOEGEL" AS "a"
JOIN "ask_art" AS "b" USING ("id")


Thanx for your time
Bernd

> Good luck !
>
> Olivier
>
>
>
>
>
> 2014-02-19 19:54 GMT+01:00 Bernd Vogelgesang <bernd.vogelgesang at gmx.de 
> <mailto:bernd.vogelgesang at gmx.de>>:
>
>     Am 19.02.2014 19:14, schrieb Steve G:
>
>         This does not directly answer your question about spatialite
>         views, but you
>         might be able to use relationships directly in QGIS in the
>         near future (I
>         think this is a 2.1 update).  See:
>
>         http://blog.vitu.ch/10112013-1201/qgis-relations
>
>
>         -Steve
>
>
>     Hi Steve,
>     Actually I do not care by which means I reach my destination, but
>     I had the, maybe wrong; impression that using a spatial database
>     would do the trick.
>     Anyway ...
>     I already installed latest master cause I read about this relation
>     manager thing a while ago ... but I was left quite clueless about
>     how to use it.
>     Searched the web for nearly an hour about any info but to no
>     avail, so many thanks for sharing the link!!
>
>     Will have a look at it ASAP, maybe thats kind of a solution.
>
>     Cheers
>     Bernd
>
>
>
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