CLC Join: ticket#56fin.sql

ALTER TABLE clc.surf_area RENAME TO surf_area_bretagne;
ALTER TABLE clc.surf_area1 RENAME TO surf_area1_bretagne;
DROP TABLE IF EXISTS clc.clipped1;
CREATE TABLE clc.clipped1 AS (
SELECT gid,code_00,
           ST_Multi(ST_Collect(f.the_geom)) as the_geom
         FROM (SELECT gid, code_00,(ST_Dump(the_geom)).geom As the_geom
                                FROM
                                 clc.clipped
                                ) As f
GROUP BY gid,code_00); -- 5s
ALTER TABLE clc.clipped1 add column id serial PRIMARY KEY;
alter table clc.clipped1 add CONSTRAINT enforce_dims_the_geom CHECK (ndims(the_geom) = 2);
alter table clc.clipped1 add  CONSTRAINT enforce_geotype_the_geom CHECK (geometrytype(the_geom) = 'MULTIPOLYGON'::text OR the_geom IS NULL);
alter table clc.clipped1 add  CONSTRAINT enforce_srid_the_geom CHECK (srid(the_geom) = 3035);
CREATE INDEX indexclc00clipped1 ON clc.clipped1
  USING GIST ( the_geom GIST_GEOMETRY_OPS );
ALTER TABLE clc.clipped1 add constraint c_ck_ukclipped1  UNIQUE(gid,code_00); -- contrainte d'unicité OK !


ALTER TABLE clc.clipped1 add column area numeric;
UPDATE clc.clipped1 set area=ST_Area(the_geom); -- 9s

DROP TABLE IF EXISTS clc.surf_area;
CREATE TABLE clc.surf_area AS (
SELECT DISTINCT ON (init.gid) init.gid,
        artificial_surfaces_11_13,
        artificial_vegetated_14,
         arable_land_21,
         permanent_crops_22,
         pastures_23,
         heterogeneous_agricultural_24,
         forest_31,
         natural_32_33,
         wetlands_4,
         inland_waterbodies_51 ,
         marine_water_52
        -- SELECT * 
         FROM (
        SELECT  gid from clc.clipped1  ) as init        
        FULL OUTER JOIN (SELECT gid,sum(area) AS artificial_surfaces_11_13 FROM clc.clipped1 WHERE 
                        substring(code_00 from 1 for 2)='11' 
                        OR  substring(code_00 from 1 for 2)='12'
                        OR substring(code_00 from 1 for 2)='13' 
                        GROUP BY gid) AS artificial_surfaces
                       on (init.gid) =(artificial_surfaces.gid)         
        FULL OUTER JOIN (SELECT gid,sum(area) AS artificial_vegetated_14 FROM clc.clipped1 WHERE 
                        substring(code_00 from 1 for 2)='14'
                        GROUP BY gid) AS artificial_vegetated
                        on artificial_vegetated.gid =init.gid
        FULL OUTER JOIN (SELECT gid,sum(area) AS arable_land_21 FROM clc.clipped1 WHERE 
                        substring(code_00 from 1 for 2)='21'
                        GROUP BY gid) AS arable_land
                        on arable_land.gid =init.gid
        FULL OUTER JOIN (SELECT gid, sum(area) AS permanent_crops_22 FROM clc.clipped1 WHERE 
                        substring(code_00 from 1 for 2)='22'
                        GROUP BY gid) AS permanent_crops
                        on permanent_crops.gid =init.gid
        FULL OUTER JOIN (SELECT gid,sum(area) AS pastures_23 FROM clc.clipped1 WHERE 
                        substring(code_00 from 1 for 2)='23'
                        GROUP BY gid) AS pastures
                        on pastures.gid =init.gid
        FULL OUTER JOIN (SELECT gid, sum(area) AS heterogeneous_agricultural_24 FROM clc.clipped1 WHERE 
                        substring(code_00 from 1 for 2)='24'
                        GROUP BY gid) AS heterogeneous_agricultural
                        on heterogeneous_agricultural.gid =init.gid
        FULL OUTER JOIN (SELECT gid,sum(area) AS forest_31 FROM clc.clipped1 WHERE 
                        substring(code_00 from 1 for 2)='31'
                        GROUP BY gid) AS forest
                        ON forest.gid =init.gid
        FULL OUTER JOIN (SELECT gid,sum(area) AS natural_32_33 FROM clc.clipped1 WHERE 
                        substring(code_00 from 1 for 2)='32'
                        OR  substring(code_00 from 1 for 2)='33'
                        GROUP BY gid) AS nature
                        ON nature.gid =init.gid
        FULL OUTER JOIN (SELECT gid, sum(area) AS wetlands_4  FROM clc.clipped1 WHERE 
                        substring(code_00 from 1 for 1)='4'
                        GROUP BY gid) AS wetlands
                        on wetlands.gid =init.gid
        FULL OUTER JOIN (SELECT gid,sum(area) AS inland_waterbodies_51 FROM clc.clipped1 WHERE 
                        substring(code_00 from 1 for 2)='51'
                        GROUP BY gid) AS waterbodies
                        on waterbodies.gid =init.gid
        FULL OUTER JOIN (SELECT gid,sum(area) AS marine_water_52 FROM clc.clipped1 WHERE 
                        substring(code_00 from 1 for 2)='52'
                        GROUP BY gid) AS marine_water
                        on marine_water.gid =init.gid); --375 ms
ALTER TABLE clc.surf_area ADD CONSTRAINT c_pk_gid_surf_area_ PRIMARY KEY (gid); -- both 36 min