Dear Andrea,
what about using DB Manager's SQL window?
There you can input an SQL select.
To remove a column in SQLite you can create a new table without the column
to delete and then use
INSERT INTO new_table SELECT ...
Regards,
Zoltan
On Mon, 18 Aug 2014, Andrea Peri wrote:
Just to explain why this is an important question.
On a sqlite db is impossible to remove a field.
So if a table is with two geometry field, it is never see-able from qgis.
Because is not possible a command like:
alter table remove filed geometry-2;
Bye,
Andrea Peri.
2014-08-18 16:52 GMT+02:00 Andrea Peri <[email protected]>:
Hi,
I have changed my opinin.
From +1 to +0
Infact I discovered just now that gdal driver for spatialite don't
seem to support tables with more than 1 geometrt field.
Almost on QGIS.
Andrea
2014-05-17 22:19 GMT+02:00 Jeremy Palmer <[email protected]>:
I'm wondered why QGIS needs a native SpatiaLite provider and connection
dialogue any more. Unlike other database providers such as PostGIS, Oracle,
MSSQL the SpatiaLite provider doesn't seem to have anything special that
requires a QGIS provider. From a users perspective it just adds to the
confusion and complexity for adding data. Why not just use GDAL/OGR for both
Geopackage and Spatialite?
Cheers
Jeremy
________________________________________
From: Stefan Keller [[email protected]]
Sent: Sunday, 18 May 2014 12:24 a.m.
To: Martin Dobias
Cc: Jeremy Palmer; [email protected]
Subject: Re: [Qgis-developer] Geospackage Slow in QGIS
Hi Martin
It has a different binary encoding compared to Spatialite.
And in addition it integrates raster tiles (MBTiles) and metadata.
-S.
2014-05-17 14:10 GMT+02:00 Martin Dobias
<[email protected]<mailto:[email protected]>>:
Hi
On Sat, May 17, 2014 at 2:32 PM, Jeremy Palmer
<[email protected]<mailto:[email protected]>> wrote:
I've just been using the new implementation of Geopackage in QGIS :) However
each map render or feature info is very slow for large database files - even
with the new GDAL/OGR Geopackage spatial index support. Each time QGIS renders
a new map view or executes a feature info it re-opens the Geopackage file in
QgsOgrFeatureIterator via OGROpen, and the Geopackage driver open method runs
PRAGMA integrity_check which is very slow (4 secs with my 2GB test file). This
integrity check is actually a Geopackage requirement.
How can this be fixed? At the in QGIS or GDAL/OGR level?
Actually I am wondering how different is the format of GeoPackage from
the format of SpatiaLite... we could use our native SpatiaLite
provider also for GeoPackage files if they are close enough. Any
ideas?
Regards
Martin
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