[postgis-users] How to make some geometry column visible to Qgis

[Francois Hugues]

Hello
 
"This because I cannot remove the entities geometry column unless I remove the entity table first.
And if I don't remove (or make invisible to qgis if possible) the entities geometry column it slow down the qgis connection."
 
Did you try to edit the view, using the where clause to exclude the tables you don't want to be seen by postgis ?
 
Hugues.
 

________________________________

De : postgis-users-bounces at postgis.refractions.net [mailto:postgis-users-bounces at postgis.refractions.net] De la part de Pietro Rossin
Envoyé : lundi 22 octobre 2012 09:25
À : postgis-users at postgis.refractions.net
Objet : Re: [postgis-users] How to make some geometry column visible to Qgis


DELETE FROM geometry_columns WHERE f_table_name = 'puntigronda'; 

Query returned successfully: 0 rows affected, 0 ms execution time.

INSERT INTO geometry_columns (f_table_catalog,f_table_schema, f_table_name, f_geometry_column, coord_dimension, srid,type)Â 
  VALUES ('','', 'puntigronda', 'the_geom', 3, 3004,'POINTS');

Query returned successfully: 0 rows affected, 16 ms execution time.

select relkind from pg_class where relname = 'geometry_columns';

returns:
"v"

What is this?

By the way
If my technique works, is it still better to explode the "entities" table in one of this cases:

a) single layers
b) same kind of geometries

in both cases table permanent.

This because I cannot remove the entities geometry column unless I remove the entity table first.
And if I don't remove (or make invisible to qgis if possible) the entities geometry column it slow down the qgis connection.

Thanks for your help
Pietro

2012/10/22 Sandro Santilli [via PostGIS] <[hidden email]>


	On Mon, Oct 22, 2012 at 08:40:07AM +0200, Pietro Rossin wrote: 
	
	
	> DELETE FROM geometry_columns WHERE f_table_name = 'puntigronda'; 
	
	... 
	> Is there something wrong? 
	
	What's wrong is that the "geometry_columns" table should be a view, 
	in PostGIS-2.0. If it is a view, your DELETE and INSERT and UPDATE 
	to it should have no effect. 
	
	Can you verify this first ? 
	The DELETE/INSERT/UPDATE commands all return the number of affected 
	rows. If PostGIS is correctly installed you should alwyas get 0, 
	no matter what you try to insert/delete/update. 
	
	Also check: 
	select relkind from pg_class where relname = 'geometry_columns'; 
	
	
	--strk; 
	
	 http://www.cartodb.com - Map, analyze and build applications with your data 
	
	                                       ~~ http://strk.keybit.net  
	
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