On 12 Dec 2016 13:14, "Ramon AndiƱach" <cust...@westnet.com.au> wrote:

Ah. Thanks.

Can I echo Richard's request for a back port?


A backport of 3.0s fix isn't possible (it's part of a larger set of
changes). Maybe an alternative fix could be developed for 2.x, but I'm not
aware of anyone actively working on this.

Nyall


-ramon.

On 12 Dec. 2016, at 09:46, Randal Hale <rjh...@northrivergeographic.com>
wrote:

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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