Drop tables to force redo on update

Reorder

layers/transportation_name/layer.sql

@@ -1,4 +1,3 @@
-
 -- etldoc: layer_transportation_name[shape=record fillcolor=lightpink, style="rounded,filled",
 -- etldoc:     label="layer_transportation_name | <z8> z8 |<z9> z9 |<z10> z10 |<z11> z11 |<z12> z12|<z13> z13|<z14_> z14+" ] ;
 

layers/transportation_name/merge_highways.sql

@@ -1,3 +1,8 @@
+DROP TABLE IF EXISTS osm_transportation_name_linestring;
+DROP TABLE IF EXISTS osm_transportation_name_linestring_gen1;
+DROP TABLE IF EXISTS osm_transportation_name_linestring_gen2;
+DROP TABLE IF EXISTS osm_transportation_name_linestring_gen3;
+
 -- Instead of using relations to find out the road names we
 -- stitch together the touching ways with the same name
 -- to allow for nice label rendering

layers/water_name/water_lakeline.sql

@@ -1,3 +1,5 @@
+DROP TABLE IF EXISTS osm_water_lakeline;
+
 -- etldoc:  osm_water_polygon ->  osm_water_lakeline
 -- etldoc:  lake_centerline  ->  osm_water_lakeline
 CREATE TABLE IF NOT EXISTS osm_water_lakeline AS (

layers/water_name/water_point.sql

@@ -1,3 +1,5 @@
+DROP TABLE IF EXISTS osm_water_point;
+
 -- etldoc:  osm_water_polygon ->  osm_water_point
 -- etldoc:  lake_centerline ->  osm_water_point
 CREATE TABLE IF NOT EXISTS osm_water_point AS (

layers/waterway/merge_waterway.sql

@@ -1,3 +1,8 @@
+DROP TABLE IF EXISTS osm_important_waterway_linestring;
+DROP TABLE IF EXISTS osm_important_waterway_linestring_gen1;
+DROP TABLE IF EXISTS osm_important_waterway_linestring_gen2;
+DROP TABLE IF EXISTS osm_important_waterway_linestring_gen3;
+
 -- We merge the waterways by name like the highways
 -- This helps to drop not important rivers (since they do not have a name)
 -- and also makes it possible to filter out too short rivers