ALTER TABLE buildings ADD COLUMN IF NOT EXISTS typology_classification text; ALTER TABLE buildings ADD COLUMN IF NOT EXISTS typology_classification_source_type text; ALTER TABLE buildings ADD COLUMN IF NOT EXISTS typology_classification_source_links text[]; ALTER TABLE buildings ADD COLUMN IF NOT EXISTS typology_style_period text; ALTER TABLE buildings ADD COLUMN IF NOT EXISTS typology_style_period_source_type text; ALTER TABLE buildings ADD COLUMN IF NOT EXISTS typology_style_period_source_links text[]; ALTER TABLE buildings ADD COLUMN IF NOT EXISTS typology_dynamic_classification text; ALTER TABLE buildings ADD COLUMN IF NOT EXISTS typology_dynamic_classification_source_type text; ALTER TABLE buildings ADD COLUMN IF NOT EXISTS typology_dynamic_classification_source_links text[]; ALTER TABLE buildings ADD COLUMN IF NOT EXISTS typology_original_use text[]; ALTER TABLE buildings ADD COLUMN IF NOT EXISTS typology_original_use_source_type text; ALTER TABLE buildings ADD COLUMN IF NOT EXISTS typology_original_use_source_links text[]; ALTER TABLE buildings ADD COLUMN IF NOT EXISTS building_attachment_source_type text; ALTER TABLE buildings ADD COLUMN IF NOT EXISTS building_attachment_source_links text[];