[Qgis-user] PostGIS- erroneous query : Unable to get list of tables from DB

[Jason Carlson]

I think your issue sounds like what I experienced and from what I dug up it
can be as simple as what version of Postgres you were using (I was using
Postgres version 10.10) not allowing any access to the "topology" schema.
https://github.com/qgis/QGIS/issues/32483

I fixed by running the following SQL command (replace *USERNAME as the
username* you are using to connect to postgres):
*GRANT USAGE ON SCHEMA topology TO USERNAME;*

it was also suggested you could instead give access to public but I'm not
sure if that is as secure but maybe other issues are created if public
doesn't have access, this is not my area of expertise.
GRANT USAGE ON SCHEMA topology TO PUBLIC;

Hope that helps.

*Jason Carlson*


On Fri, Nov 15, 2019 at 7:30 PM Laurence Béchet <bechet.laurence at gmail.com>
wrote:

> Good afternoon,
>
> Windows 8.1 pro 64 bits
> QGIS version 3.10.0-A Coruña QGIS code revision 6c816b4204
>
> I have a postgresql db with Postgis enabled to which I connect using a pg
> service.
> It was working fine with the default profile.
>
> I created a new profile (settings/user profiles). My projects were still
> displayed (tables located in the db) and looked ok.
>
> But when I wanted to add a new table from datasource manager/postgresql I
> was prompted the first time to create a connection. I created the same one
> as I had for the default profile. I tested the connection and it passed. I
> clicked to 'connect' and nothing happened: no table list displayed. I
> checked with DB/DB manager and I can see my tables.
> I switched back to the former default profile: same behaviour (no tables
> listed).
>
> There are  different qgis-auth.db files (different sizes) in each profile
> folder of C:\Users\<myuser>\AppData\Roaming\QGIS\QGIS3\profiles (don't know
> how to read them though)
>
> In the logs I found the following messages (PostGIS section):
> 2019-11-16T12:27:02     WARNING    NOTICE: row number 0 is out of range
> 0..-1
> 2019-11-16T12:28:20     WARNING    Erroneous query: <long query> [ERROR:
> permission denied for schema topology
> 2019-11-16T12:28:20     WARNING    NOTICE: WARNING: there is no
> transaction in progress
> 2019-11-16T12:28:20     WARNING    Unable to get list of spatially enabled
> tables from the database
>
> I don't have any problem with the default user and QGIS version
> 3.4.13-Madeira
> (I have not tried to create another profile with 3.4.13 because I need a
> working version of qgis).
>
> The error message seems to point toward a lack of permission, but that
> same user can run that query within pgadmin without any problems.
>
> Any idea where to look? I looked on internet but to no avail ...
>
> Thank you in advance
> Laurence Bechet
> *ARK IN THE PARK Volunteer Co-Ordinator*
> *Cascades Ranger Station*
> * Falls Road, Waitakere*, Auckland
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