mysql5.6 mysqldump备份报错

mysqldump -uroot -p --single-transaction --databases A  B  C  D  E  F  G  H --master-data=2 > backup.sql 出现以下报错： mysqldump: Couldn't execute 'show table status like 'view\_frist\_order'': SELECT command denied to user ''@'localhost' for column 'usr_user_id' in table 'ord_order' (1143) 修改view的definer select concat("alter DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW ",TABLE_SCHEMA,".",TABLE_NAME," as ",VIEW_DEFINITION,";") from information_schema.VIEWS whereTABLE_SCHEMA='sp';  再执行输出的语句。