Create SQL scipts for construction category

migrations/0xx.construction-materials.down.sql

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+
+ALTER TABLE buildings DROP COLUMN IF EXISTS core_materials;
+ALTER TABLE buildings DROP COLUMN IF EXISTS secondary_materials;
+ALTER TABLE buildings DROP COLUMN IF EXISTS roof_covering;
+
+
+DROP TYPE IF EXISTS construction_materials;
+DROP TYPE IF EXISTS roof_covering;

migrations/0xx.construction-materials.up.sql

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+-- Launch of Constuction category
+-- Fields: Core construction material, Secondary construction materials, Roof covering materials
+
+-- Construction materials: Wood, Stone, Brick, Steel, Reinforced Concrete, Other Metal
+--   Other Natural Material, Other Man-Made Material
+CREATE TYPE construction_materials
+    AS ENUM ('Wood',
+    'Stone',
+    'Brick',
+    'Steel',
+    'Reinforced Concrete',
+    'Other Metal',
+    'Other Natural Material',
+    'Other Man-Made Material');
+
+-- Roof covering materials: Slate, Clay Tile, Wood, Asphalt, Iron or Steel, Other Metal
+--   Other Natural Material, Other Man-Made Material
+CREATE TYPE roof_covering
+    AS ENUM ('Slate',
+    'Clay Tile',
+    'Wood',
+    'Asphalt',
+    'Iron or Steel',
+    'Other Metal',
+    'Other Natural Material',
+    'Other Man-Made Material');
+
+-- Core Construction Material
+ALTER TABLE buildings
+    ADD COLUMN IF NOT EXISTS core_materials construction_materials;
+
+-- Secondary Construction Materials
+ALTER TABLE buildings
+    ADD COLUMN IF NOT EXISTS secondary_materials construction_materials;
+
+-- Main Roof Covering 
+ALTER TABLE buildings
+    ADD COLUMN IF NOT EXISTS roof_covering roof_covering;