-- 거래 이력 테이블에 새로운 컬럼 추가
ALTER TABLE trade_history 
ADD COLUMN IF NOT EXISTS total_amount NUMERIC(15, 2),
ADD COLUMN IF NOT EXISTS entry_reason TEXT,
ADD COLUMN IF NOT EXISTS exit_reason TEXT,
ADD COLUMN IF NOT EXISTS signals JSONB;

-- 기존 데이터에 대한 total_amount 계산
UPDATE trade_history 
SET total_amount = executed_price * executed_quantity 
WHERE total_amount IS NULL AND executed_price IS NOT NULL AND executed_quantity IS NOT NULL;