-- SQL table definition
-- Generated from splitting a larger SQL file
-- Table: ai_statistics_monthly
--

CREATE TABLE `ai_statistics_monthly` (
  `id` bigint NOT NULL AUTO_INCREMENT COMMENT '自增主键',
  `author_id` int NOT NULL DEFAULT '0' COMMENT '作者ID',
  `author_name` varchar(100) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT '作者名称',
  `channel` tinyint(1) NOT NULL DEFAULT '1' COMMENT '1=baidu|2=toutiao|3=weixin',
  `stat_monthly` varchar(48) NOT NULL COMMENT '统计日期（自然月）',
  `monthly_revenue` decimal(18,2) DEFAULT '0.00' COMMENT '当月收益（stat_date所在自然月的总收益）',
  `revenue_mom_growth_rate` decimal(10,6) DEFAULT '0.000000' COMMENT '收益月环比增长率（(本月收益 - 上月收益) / NULLIF(上月收益, 0)）',
  `created_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
  `updated_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
  PRIMARY KEY (`id`) USING BTREE,
  UNIQUE KEY `uk_author_stat_date` (`author_id`,`stat_monthly`) USING BTREE,
  KEY `idx_stat_date` (`stat_monthly`) USING BTREE,
  KEY `idx_author_id` (`author_id`) USING BTREE
) ENGINE=InnoDB AUTO_INCREMENT=41278 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci ROW_FORMAT=DYNAMIC COMMENT='AI内容每月核心指标汇总表（含累计、收益及环比）';