-- Depreciation rate on assets + widen depreciation_method for OTHER

ALTER TABLE assets
  ADD COLUMN IF NOT EXISTS depreciation_rate NUMERIC(8, 4);

ALTER TABLE assets
  ALTER COLUMN depreciation_method TYPE VARCHAR(20);

COMMENT ON COLUMN assets.depreciation_method IS 'SLM, WDV, OTHER';
COMMENT ON COLUMN assets.depreciation_rate IS 'Annual depreciation rate percentage';