须要每隔一段时间选取最老的商户更新时间戳: update DP_Shop set DP_Shop.LastDate = now() where DP_Shop.ShopId in (select ShopId from DP_Shop order by LastDate limit 5); ERROR 1235 (42000): This version of MySQL doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery' 多加一层: u
类型:转载 sql update 触发器 可获得被update的行的信息,需要的朋友可以参考下. 复制代码 代码如下: create trigger TgName on tb for update as if update(recommend) begin update tb set commenddate=(getdate()) from tb inner join inserted on tb.vlistid=Inserted.vlistid end recommend表示被更新的字段.
win7 IIS 所有网站都停止了,启动提示: 除非 Windows Activation Service (WAS)和万维网发布服务(W3SVC)均处于运行状态,否则无法启动网站.目前,这两项服务均处于停止状态. 启动 World Wide Web Publishing Service,不成功. 建立目录,C:\inetpub\temp\apppools 后再启动 World Wide Web Publishing Service 成功.
mysql - SQL UPDATE with INNER JOIN - Stack Overflowhttps://stackoverflow.com/questions/14491042/sql-update-with-inner-join MySQL UPDATE JOIN | Cross-Table Update in MySQLhttp://www.mysqltutorial.org/mysql-update-join/
在使用My Sql数据库语法操作update时,第一时间想到的是一下写法: UPDATE purchase_request_detail SET convert_to_voucher_id=, convert_to_voucher_type='inventory-voucher' WHERE detail_id IN ( and item_id=) ; 但是这个时候就会报错:You can't specify target table 'xxx' for update in FROM My Sq