Merge pull request #431 from tomalrussell/feature/migrations_type

Feature/migrations type

migrations/014.type.down.sql

@@ -0,0 +1,9 @@
+--Original building use, this is same NLUD fields as current building use
+ALTER TABLE buildings DROP COLUMN IF EXISTS original_building_use;
+
+-- Building attachment, ENUM: Detached, Semi-detached, End-Terrace, Mid-Terrace
+ALTER TABLE buildings DROP COLUMN IF EXISTS building_attachment_form;
+
+-- [Disabled for launch] Date of change of use
+-- This needs to pair with demolition 
+ALTER TABLE buildings DROP COLUMN IF EXISTS date_change_building_use;

migrations/014.type.up.sql

@@ -0,0 +1,19 @@
+--Original building use, this is same NLUD fields as current building use
+ALTER TABLE buildings
+    ADD COLUMN IF NOT EXISTS original_building_use;
+
+-- Building attachment, ENUM: Detached, Semi-detached, End-Terrace, Mid-Terrace
+CREATE TYPE building_attachment_form
+AS ENUM ('Detached',
+    'Semi-Detached',
+    'End-Terrace',
+    'Mid-Terrace',
+    'Unknown');
+
+ALTER TABLE buildings
+    ADD COLUMN IF NOT EXISTS building_attachment_form building_attachment_form DEFAULT 'Unknown';
+
+-- [Disabled for launch] Date of change of use
+-- This needs to pair with demolition
+ALTER TABLE buildings
+    ADD COLUMN IF NOT EXISTS date_change_building_use smallint;