ALTER TABLE buildings ADD COLUMN IF NOT EXISTS location_name_link text; ALTER TABLE buildings ADD COLUMN IF NOT EXISTS location_alternative_footprint_links text[]; ALTER TABLE buildings ADD COLUMN IF NOT EXISTS age_historical_raster_map_links text[]; ALTER TABLE buildings ADD COLUMN IF NOT EXISTS age_historical_vectorised_footprint_links text[]; ALTER TABLE buildings ADD COLUMN IF NOT EXISTS landowner_links text[]; ALTER TABLE buildings ADD COLUMN IF NOT EXISTS designers_links text[]; ALTER TABLE buildings ADD COLUMN IF NOT EXISTS builder_links text[]; ALTER TABLE buildings ADD COLUMN IF NOT EXISTS developer_links text[];