-- 逐日持仓快照
-- 由 src/hdiv/data/schema.py 生成，请勿手工修改
CREATE TABLE IF NOT EXISTS `hd_backtest_position` (
  `id`            BIGINT       NOT NULL AUTO_INCREMENT,
  `run_id`        VARCHAR(32)  NOT NULL,
  `trade_date`    DATE         NOT NULL,
  `symbol`        VARCHAR(12)  NOT NULL,
  `quantity`      DECIMAL(20,4) NOT NULL,
  `avg_cost`      DECIMAL(16,4) NULL,
  `close`         DECIMAL(16,4) NULL,
  `market_value`  DECIMAL(24,4) NULL,
  `weight`        DECIMAL(12,8) NULL,
  `unrealized_pnl` DECIMAL(24,4) NULL,
  `holding_days`  INT          NULL,
  `created_at`    DATETIME     NOT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `uq_hd_bt_pos` (`run_id`,`trade_date`,`symbol`),
  KEY `ix_hd_bt_pos_sym` (`run_id`,`symbol`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci COMMENT='逐日持仓';