Bug report #21397

Assigning a primary key in QgsDataSourceUri doesn't work

Added by Patrice V about 6 years ago. Updated about 6 years ago.

Status:Open
Priority:High
Assignee:-
Category:Python bindings / sipify
Affected QGIS version:3.4.5 Regression?:Yes
Operating System: Easy fix?:No
Pull Request or Patch supplied:No Resolution:
Crashes QGIS or corrupts data:No Copied to github as #:29214

Description

Hi devs,

I use qgis 3.4.5 with windows 7 64bit.

I build a qgsvectorlayer like this :
uri = qgis.core.QgsDataSourceUri()
uri.setDatabase('a_sqlite_file')
uri.setDataSource('', 'SELECT * FROM MyTable', 'geom' ,'','the_pk_column_name')
vlayer = qgis.core.QgsVectorLayer(uri.uri(), tablename, 'spatialite')

When I ask the id of the features in vlayer ([fet.id() for fet in vlayer.getFeatures()]), it returns the value of the first column of 'MyTable', and not the value of the 'the_pk_column_name' column...

it was working nicely in 2.18....

thank you in advance,

Related issues

Duplicated by QGIS Application - Bug report #21670: DB Manager - load sql query as layer with primary key Closed 2019-03-25

History

#1 Updated by Giovanni Manghi about 6 years ago

  • Subject changed from Assigning a primary key in QgsDataSourceUri doesn't work :/ to Assigning a primary key in QgsDataSourceUri doesn't work
  • Category changed from DB Manager to Python bindings / sipify
  • Status changed from Open to Feedback

Have you asked in the developers mailing list if anything changed about what this is done in 3.*?

#2 Updated by Patrice V about 6 years ago

Hi,

The moderator of the mailing list doesn't let me post a question... I really believe it is a bug and not an expected behaviour...

Regards,

#3 Updated by Giovanni Manghi about 6 years ago

Patrice V wrote:

Hi,

The moderator of the mailing list doesn't let me post a question... I really believe it is a bug and not an expected behaviour...

Regards,

have you subscribed the list? if not is normal your messages get bumped.

#4 Updated by Patrice V about 6 years ago

Hi,
I've asked a subsription 2 weeks ago and I still not have a mail to confirm...
I'm sure it is a regression...
Regards,

#5 Updated by Giovanni Manghi about 6 years ago

  • Status changed from Feedback to Open

Patrice V wrote:

Hi,
I've asked a subsription 2 weeks ago and I still not have a mail to confirm...
I'm sure it is a regression...
Regards,

the process to subscribe/unsubscribe the lists is not manually reviewed, you should receive an confirmation email, with a link.

#6 Updated by Patrice V about 6 years ago

Hi,
it's been 6 days I've made a post and nobody replies :(
it's blocking me for porting a plugin to qgis 3

What should I do ?
Thanks,

#7 Updated by Alessandro Pasotti about 6 years ago

Patrice V wrote:

Hi,
it's been 6 days I've made a post and nobody replies :(
it's blocking me for porting a plugin to qgis 3

What should I do ?

Perhaps you could get some useful ideas from this article:

https://nyalldawson.net/2016/08/how-to-effectively-get-things-changed-in-qgis/

#8 Updated by Alessandro Pasotti about 6 years ago

  • Duplicated by Bug report #21670: DB Manager - load sql query as layer with primary key added

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