优化

file/src/main/resources/db/file.sql

@@ -59,3 +59,39 @@ CREATE TABLE IF NOT EXISTS file_download_log (
   KEY idx_download_log_file (tenant_id, file_id, downloaded_at),
   KEY idx_download_log_user (tenant_id, user_id, downloaded_at)
 ) ENGINE=InnoDB COMMENT='文件下载审计日志表';
+
+CREATE TABLE IF NOT EXISTS file_export_task (
+  id BIGINT UNSIGNED NOT NULL COMMENT '导出任务ID（雪花ID）',
+  tenant_id BIGINT UNSIGNED NOT NULL COMMENT '申请人所属租户ID，平台任务为0',
+  app_code VARCHAR(24) NOT NULL COMMENT '申请端：PLATFORM或MERCHANT',
+  task_no VARCHAR(40) NOT NULL COMMENT '导出任务编号',
+  export_type VARCHAR(64) NOT NULL COMMENT '导出类型',
+  format VARCHAR(16) NOT NULL DEFAULT 'XLSX' COMMENT '导出格式',
+  task_name VARCHAR(128) NOT NULL COMMENT '任务名称',
+  parameters_json JSON NOT NULL COMMENT '筛选条件快照',
+  status VARCHAR(24) NOT NULL DEFAULT 'PENDING' COMMENT 'PENDING/RUNNING/SUCCEEDED/FAILED/EXPIRED',
+  total_rows BIGINT UNSIGNED NULL COMMENT '预计总行数',
+  processed_rows BIGINT UNSIGNED NOT NULL DEFAULT 0 COMMENT '已处理行数',
+  file_name VARCHAR(255) NULL COMMENT '下载文件名',
+  object_key VARCHAR(512) NULL COMMENT '存储对象键',
+  content_type VARCHAR(128) NULL COMMENT '文件类型',
+  size_bytes BIGINT UNSIGNED NULL COMMENT '文件字节数',
+  failure_message VARCHAR(1000) NULL COMMENT '失败原因',
+  requested_by BIGINT UNSIGNED NOT NULL COMMENT '申请用户ID',
+  requested_username VARCHAR(128) NULL COMMENT '申请账号快照',
+  requested_at DATETIME(3) NOT NULL COMMENT '申请时间',
+  started_at DATETIME(3) NULL COMMENT '开始时间',
+  completed_at DATETIME(3) NULL COMMENT '完成时间',
+  expires_at DATETIME(3) NULL COMMENT '文件过期时间',
+  created_by BIGINT UNSIGNED NULL COMMENT '创建人ID',
+  created_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3) COMMENT '创建时间',
+  updated_by BIGINT UNSIGNED NULL COMMENT '最后修改人ID',
+  updated_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3) ON UPDATE CURRENT_TIMESTAMP(3) COMMENT '更新时间',
+  deleted TINYINT(1) NOT NULL DEFAULT 0 COMMENT '逻辑删除标记',
+  version INT NOT NULL DEFAULT 0 COMMENT '乐观锁版本号',
+  PRIMARY KEY (id),
+  UNIQUE KEY uk_file_export_task_no (task_no),
+  KEY idx_file_export_owner (tenant_id, app_code, requested_by, requested_at),
+  KEY idx_file_export_status (status, requested_at),
+  KEY idx_file_export_expiry (status, expires_at)
+) ENGINE=InnoDB COMMENT='公共异步导出任务表';