CREATE TABLE `trade_extend` (
  `TradeId` int NOT NULL COMMENT '交易ID',
  `ExtendJson` longtext CHARACTER SET utf8 COLLATE utf8_general_ci COMMENT '交易扩展元素JSON',
  `CompanyJson` varchar(1000) DEFAULT NULL COMMENT '用于公司定制的扩展',
  `InitialMarginJson` varchar(1000) DEFAULT NULL COMMENT '初始预付金',
  PRIMARY KEY (`TradeId`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;