Hi all!
I'm trying the new, relatively, features of the processing toolbox, using the 
graphical modeler and to run the model from command line. Most works fine but 
there are some things that I can't get working. Either I don't know how to 
configure it properly, or it is a bug or feature request. The documentation is 
quite short on this subject and I haven't found any more good examples. My test 
model reads two vector feature sources, buffer one of the, clip them against 
each other, write a shapefile, export to PostgreSQL as well, run some SQL and 
saves a log to a file. This works fine in graphical mode. In command line I 
have a few problems:

·         Works fine with shape files but how to read directly from a database 
table? In graphical mode I can browse for a table and use it like 
'postgres://dbname=\'geodata\' host=sbkgeodata port=5432 user=\'user\' 
password=\'pwd\' sslmode=disable key=\'UNIK\' estimatedmetadata=true srid=3008 
type=PolygonZ checkPrimaryKeyUnicity=\'1\' table=\"pri\".\"byggnad_\" (geom)' 
but I don't know how to write it as a parameter in command line.

·         The log file is created but it is empty from command line.

·         Is there an option to use an existing table in the database and 
truncate it instead of dropping and recreate? Thought there would be. This is 
not connected to command line.

Is there someone else that have been testing features like this or are there 
any good examples to view? Maybe write bug report/feature requests/enhancement 
proposals to describe and discuss if isn't  just me using it the wrong way. I'm 
on Windows 10 with QGIS 3.16.3 Standalone installer.

Karl-Magnus Jönsson


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