[gdal-dev] append mode in postgresql

[Yves Jacolin (Free)]

thanks Even. All information is in the pg_driver page. I really need to read 
it more carefully :(

There is just a very small issue, the doc said about SCHEMA:
"Use the -nln option of ogr2ogr instead, or better the active_schema "

But there is no example about SCHEMA :/

Y.
Le mercredi 6 mars 2013 16:42:09 Even Rouault a écrit :
> Selon "Yves Jacolin (Free)" <yjacolin at free.fr>:
> > Le mercredi 6 mars 2013 15:38:11 Yves Jacolin a écrit :
> > > Hello,
> > > 
> > > I am trying to import EDIGEO files in append mode. The doc said to use
> > > -append flag with ogr2ogr commande.
> > > 
> > > ogr2ogr -gt 65536 -f "PostgreSQL" "PG:dbname=test_edigeo 
> > > host='localhost'"
> > > - lco "GEOMETRY_NAME=the_geom" -lco "SCHEMA=test" -lco "OVERWRITE=YES"
> > > -nln
> > > EDIGEO_parcelle  E0001.THF PARCELLE_id
> > > 
> > > => ok
> > > 
> > > ogr2ogr -append -update -gt 65536 -f "PostgreSQL" "PG:dbname=test_edigeo
> > > host='localhost'" -lco "GEOMETRY_NAME=the_geom" -lco "SCHEMA=test" -nln
> > > EDIGEO_parcelle  E0002.THF PARCELLE_id
> > > 
> > > => nok I get this error message:
> > > 
> > > ERROR 1: Layer test.edigeo_parcelle already exists, CreateLayer failed.
> > > Use the layer creation option OVERWRITE=YES to replace it.
> > > ERROR 1: Terminating translation prematurely after failed
> > > translation of layer PARCELLE_id (use -skipfailures to skip errors)
> 
> You cannot use -lco (layer *creation* option) for an append/update. Well,
> you can, but they will be ignored. As such, the schema that will be used
> will be the public schema (since -lco SCHEMA=test is ignored). In your
> update ogr2ogr command line, you have to specify either "-nln
> test.PARCELLE_id" or add " active_schema=test" to your connexion string,
> i.e. "PG:dbname=test_edigeo host='localhost' active_schema=test" (you could
> also have used active_schema for the first ogr2ogr command that will create
> the table)
> 
> > > Y.
> > 
> > Here some information about my issue:
> > 
> > 1/ ogr2ogr is not protecting layer name. If I use EDIGEO_parcelle as a
> > layername, Postgresql will create "edigeo_parcelle" table which is
> > incorrect (even if this is not a good practice to set up an uppercase
> > table name).
> This is the effect of the "laundering" that is done by default. See the
> LAUNDER layer creation option documented in http://gdal.org/ogr/drv_pg.html
> > 2/ In SQL request sent by ogr2ogr I find this one:
> > SELECT a.attname, a.attnum, t.typname, t.typname =
> > ANY(ARRAY['int2','int4','serial']) AS isfid FROM pg_class c, pg_attribute
> > a, pg_type t, pg_namespace n, pg_index i WHERE a.attnum > 0 AND
> > a.attrelid = c.oid AND a.atttypid = t.oid AND c.relnamespace = n.oid AND
> > c.oid = i.indrelid
> > AND i.indisprimary = 't' AND t.typname !~ '^geom' AND c.relname =
> > 'edigeo_parcelle' AND (i.indkey[0]=a.attnum OR i.indkey[1]=a.attnum OR
> > i.indkey[2]=a.attnum OR i.indkey[3]=a.attnum OR i.indkey[4]=a.attnum OR
> > i.indkey[5]=a.attnum OR i.indkey[6]=a.attnum OR i.indkey[7]=a.attnum OR
> > i.indkey[8]=a.attnum OR i.indkey[9]=a.attnum) AND n.nspname='public' ORDER
> > BY a.attnum;
> 
> > But my layer should be in "test" schema. Correct SQL request should be:
> See above explanation about active_schema.