Changes between Version 1 and Version 2 of CookBook join RHT-BDMAP

Timestamp:

May 19, 2011 4:31:23 PM (14 years ago)

Author:

celine

Comment:

--

CookBook join RHT-BDMAP

@@ -4 +4 @@
 
 = Joining RHT with BDMAP =
+
+Joining the riversegment from RHT and stationsp2 (??)
+
+
+Problème de projections !!! A vérifier en cours !
+-- creation de la table bdmap_rht, je rajoute un the_geom a la requete pour pouvoir voir la table dans Qgis  
+DROP TABLE IF EXISTS rht.bdmap_rht;
+CREATE TABLE rht.bdmap_rht as (
+        SELECT distinct on (st_codecsp) st_codecsp, gid, min(distance) as distance, the_geom FROM (
+               SELECT st_codecsp, gid ,CAST(distance(r.the_geom, s.the_geom) as  decimal(15,1)) as distance,s.the_geom 
+               FROM bd_map.stationsp2 As s
+               INNER JOIN  rht.riversegments r ON ST_DWithin(r.the_geom, s.the_geom,300)
+               WHERE s.the_geom IS NOT NULL
+               ORDER BY st_codecsp) AS sub 
+        GROUP BY st_codecsp, distance,gid, the_geom
+);
+alter table rht.bdmap_rht add column id serial;
+-- mise à jour de la table geometry_columns
+INSERT INTO geometry_columns(f_table_catalog, f_table_schema, f_table_name, f_geometry_column, coord_dimension, srid, "type")
+SELECT '', 'rht', 'bdmap_rht', 'the_geom', ST_CoordDim(the_geom), ST_SRID(the_geom), GeometryType(the_geom)
+FROM rht.bdmap_rht LIMIT 1;
+
+-- creation d'index, clé primaire, et constraintes qui vont bien
+alter table rht.bdmap_rht add CONSTRAINT enforce_dims_the_geom CHECK (ndims(the_geom) = 2);
+alter table rht.bdmap_rht add  CONSTRAINT enforce_geotype_the_geom CHECK (geometrytype(the_geom) = 'POINT'::text OR the_geom IS NULL);
+alter table rht.bdmap_rht add  CONSTRAINT enforce_srid_the_geom CHECK (srid(the_geom) = 3035);
+alter table rht.bdmap_rht ADD CONSTRAINT pk_id PRIMARY KEY(id);
+CREATE INDEX indexbdmap_rht ON rht.bdmap_rht
+  USING GIST ( the_geom GIST_GEOMETRY_OPS );
+