select top 10 * ,row()_number over ( order by 字段 desc) as rownum from 表 row()_number;简单的说row_number()从1开始,为每一条分组记录返回一个数字 ( order by 字段 desc,order by 字段2 desc):需要排序的字段, 也可以:( order by 字段 desc,order by 字段2 desc)先根据字段排序,再根据字段二排序 然后页面需要调用的就是 rownum 字段
转:装完Centos7提示Initial setup of CentOS Linux 7 (core) 在用U盘装完CentOS后,重新开机启动后显示: Initial setup of CentOS Linux 7 (core) 1) [x] Creat user 2) [!] License information (no user will be created) (license not accepted) Please make your choice from above ['q
装完RHEL7后,重新开机启动后显示: 1) [x] Creat user 2) [!] License information (no user will be created) (license not accepted) Please make your choice from above ['q' to quit | 'c' to continue | 'r' to refresh]: 解决方法: 输入"1",按Enter键 输入"2",按Enter键 输入
用Grid显示数据后,如何让系统自动选取第一条记录呢?在显示Grid时由于其Store正在loading,没法在Grid选取第一条记录,因为还没有记录,所以应在其Store进行操作. 查看Ext.data.Store的load()方法如下: load( [options] )Loads data into the Store via the configured proxy. This uses the Proxy to make an asynchronous call to whatever