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I Luk Kim af26df8895 feat: AlpacaPriceData에 interval 컬럼 추가 — 일봉/분봉 DB 충돌 해결
- alpaca_price_data 테이블에 interval 컬럼 추가 (VARCHAR, default '1d')
- unique constraint: (ticker, date) → (ticker, date, interval)
- get_or_fetch_multi_bars(): interval 필터로 coverage 체크 및 DB 조회
- insert rows에 interval 포함
- asyncpg param limit 대비 CHUNK 3000→2900 (파라미터 11개/행)
- alembic 마이그레이션: h9b0c1d2e3f4

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
4 months ago
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