Test union2

layers/landcover/generalized.sql

@@ -32,9 +32,10 @@ CREATE TABLE simplify_vw_z13 AS
 (
     SELECT subclass,
            ST_MakeValid(
-            ST_SnapToGrid(
+             ST_Union(
+               ST_SnapToGrid(
              ST_SimplifyVW(geometry, power(zres(13),2)),
-             0.001)) AS geometry
+             0.001))) AS geometry
     FROM osm_landcover_polygon
     GROUP BY subclass
     WHERE ST_Area(geometry) > power(zres(12),2)
@@ -70,9 +71,10 @@ CREATE TABLE simplify_vw_z12 AS
 (
     SELECT subclass,
            ST_MakeValid(
-            ST_SnapToGrid(
+             ST_Union(
+               ST_SnapToGrid(
              ST_SimplifyVW(geometry, power(zres(12),2)),
-             0.001)) AS geometry
+             0.001))) AS geometry
     FROM simplify_vw_z13
     GROUP BY subclass
     WHERE ST_Area(geometry) > power(zres(11),2)
@@ -110,7 +112,7 @@ CREATE TABLE simplify_vw_z11 AS
             ST_MakeValid(
             ST_SnapToGrid(
              ST_SimplifyVW(geometry, power(zres(11),2)),
-             0.001)) AS geometry
+             0.001))) AS geometry
     FROM simplify_vw_z12
     GROUP BY subclass
     WHERE ST_Area(geometry) > power(zres(10),2)
@@ -146,9 +148,10 @@ CREATE TABLE simplify_vw_z10 AS
 (
     SELECT subclass,
            ST_MakeValid(
-            ST_SnapToGrid(
+             ST_Union(
+               ST_SnapToGrid(
              ST_SimplifyVW(geometry, power(zres(10),2)),
-             0.001)) AS geometry
+             0.001))) AS geometry
     FROM simplify_vw_z11
     GROUP BY subclass
     WHERE ST_Area(geometry) > power(zres(9),2)
@@ -184,9 +187,10 @@ CREATE TABLE simplify_vw_z9 AS
 (
     SELECT subclass,
            ST_MakeValid(
-            ST_SnapToGrid(
+             ST_Union(
+               ST_SnapToGrid(
              ST_SimplifyVW(geometry, power(zres(9),2)),
-             0.001)) AS geometry
+             0.001))) AS geometry
     FROM simplify_vw_z10
     GROUP BY subclass
     WHERE ST_Area(geometry) > power(zres(8),2)
@@ -234,9 +238,10 @@ CREATE TABLE simplify_vw_z8 AS
 (
     SELECT subclass,
            ST_MakeValid(
-            ST_SnapToGrid(
+             ST_Union(
+               ST_SnapToGrid(
              ST_SimplifyVW(geometry, power(zres(8),2)),
-             0.001)) AS geometry
+             0.001))) AS geometry
     FROM simplify_vw_z9
     GROUP BY subclass
     WHERE ST_Area(geometry) > power(zres(7),2)
@@ -276,9 +281,10 @@ CREATE TABLE simplify_vw_z7 AS
 (
     SELECT subclass,
            ST_MakeValid(
-            ST_SnapToGrid(
+             ST_Union(
+               ST_SnapToGrid(
              ST_SimplifyVW(geometry, power(zres(7),2)),
-             0.001)) AS geometry
+             0.001))) AS geometry
     FROM simplify_vw_z8
     GROUP BY subclass
     WHERE ST_Area(geometry) > power(zres(6),2)
@@ -312,9 +318,10 @@ CREATE TABLE simplify_vw_z6 AS
 (
     SELECT subclass,
            ST_MakeValid(
-            ST_SnapToGrid(
+             ST_Union(
+               ST_SnapToGrid(
              ST_SimplifyVW(geometry, power(zres(6),2)),
-             0.001)) AS geometry
+             0.001))) AS geometry
     FROM simplify_vw_z7
     GROUP BY subclass
     WHERE ST_Area(geometry) > power(zres(5),2)
@@ -348,9 +355,10 @@ CREATE TABLE simplify_vw_z5 AS
 (
     SELECT subclass,
            ST_MakeValid(
-            ST_SnapToGrid(
+             ST_Union(
+               ST_SnapToGrid(
              ST_SimplifyVW(geometry, power(zres(5),2)),
-             0.001)) AS geometry
+             0.001))) AS geometry
     FROM simplify_vw_z6
     GROUP BY subclass
     WHERE ST_Area(geometry) > power(zres(4),2)
@@ -384,9 +392,10 @@ CREATE TABLE simplify_vw_z4 AS
 (
     SELECT subclass,
            ST_MakeValid(
-            ST_SnapToGrid(
+             ST_Union(
+               ST_SnapToGrid(
              ST_SimplifyVW(geometry, power(zres(4),2)),
-             0.001)) AS geometry
+             0.001))) AS geometry
     FROM simplify_vw_z5
     GROUP BY subclass
     WHERE ST_Area(geometry) > power(zres(3),2)
@@ -420,9 +429,10 @@ CREATE TABLE simplify_vw_z3 AS
 (
     SELECT subclass,
            ST_MakeValid(
-            ST_SnapToGrid(
+             ST_Union(
+               ST_SnapToGrid(
              ST_SimplifyVW(geometry, power(zres(3),2)),
-             0.001)) AS geometry
+             0.001))) AS geometry
     FROM simplify_vw_z4
     GROUP BY subclass
     WHERE ST_Area(geometry) > power(zres(2),2)
@@ -456,9 +466,10 @@ CREATE TABLE simplify_vw_z3 AS
 (
     SELECT subclass,
            ST_MakeValid(
-            ST_SnapToGrid(
+             ST_Union(
+               ST_SnapToGrid(
              ST_SimplifyVW(geometry, power(zres(3),2)),
-             0.001)) AS geometry
+             0.001))) AS geometry
     FROM simplify_vw_z4
     GROUP BY subclass
     WHERE ST_Area(geometry) > power(zres(2),2)
@@ -492,9 +503,10 @@ CREATE TABLE simplify_vw_z2 AS
 (
     SELECT subclass,
            ST_MakeValid(
-            ST_SnapToGrid(
+             ST_Union(
+               ST_SnapToGrid(
              ST_SimplifyVW(geometry, power(zres(2),2)),
-             0.001)) AS geometry
+             0.001))) AS geometry
     FROM simplify_vw_z3
     GROUP BY subclass
     WHERE ST_Area(geometry) > power(zres(1),2)
@@ -528,9 +540,10 @@ CREATE TABLE simplify_vw_z1 AS
 (
     SELECT subclass,
            ST_MakeValid(
-            ST_SnapToGrid(
+             ST_Union(
+               ST_SnapToGrid(
              ST_SimplifyVW(geometry, power(zres(1),2)),
-             0.001)) AS geometry
+             0.001))) AS geometry
     FROM simplify_vw_z2
     GROUP BY subclass
     WHERE ST_Area(geometry) > power(zres(0),2)
@@ -564,9 +577,10 @@ CREATE TABLE simplify_vw_z0 AS
 (
     SELECT subclass,
            ST_MakeValid(
-            ST_SnapToGrid(
+             ST_Union(
+               ST_SnapToGrid(
              ST_SimplifyVW(geometry, power(zres(0),2)),
-             0.001)) AS geometry
+             0.001))) AS geometry
     FROM simplify_vw_z1
     GROUP BY subclass
     WHERE ST_Area(geometry) > power(zres(0),2)