You're hitting a bug that exists in QGIS 2.16 and 2.18 - They are
working on a resolution.
See Below:
http://hub.qgis.org/issues/15847
On 12/11/2016 08:39 PM, custard wrote:
Hi All,
As a mostly shape/tab file user, I've been attempting to experiment
with spatialite dbs a bit recently, and am starting to get a bit more
used to them. I'm hitting a problem with splitting objects though, and
wondered if this annoyance counted as a bug?
If I have a spatialite layer and split an object, that's fine. But
when I save the layer I get a "Could not commit changes to layer
LayerName" banner. If I press "Show more" then I get something like this:
_____
Could not commit changes to layer layername
Errors: SUCCESS: 1 geometries were changed.
SUCCESS: 1 attribute value(s) changed.
ERROR: 4 feature(s) not added.
Provider errors:
SQLite error: UNIQUE constraint failed: LayerName.pkuid
SQL: INSERT INTO
"layername"("geometry","pkuid","Code","Lith","Description","Quality","code1","lith1","description1","quality1")
VALUES (ST_Multi(GeomFromWKB(?, 28351)),?,?,?,?,?,?,?,?,?)
____
I'm not populaing the pkuid data, so I think QGIS is auto filling this.
I think that what's happening is that when QGIS splits the feature
both new parts have the same pkuid number. Certainly if I go in
manually and change the field I can save without errors.
If QGIS is auto filling this column, ought it not be handling the
splitting case too?
Thoughts?
-ramon.
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--
------------------------------------------------
Randal Hale
North River Geographic Systems, Inc
http://www.northrivergeographic.com
423.653.3611 [email protected]
twitter:rjhale http://about.me/rjhale
http://www.northrivergeographic.com/introduction-to-quantum-gis
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