SQL Server-- SELECT TOP 50 * FROM TAB_USERS ORDER BY NEWID(); ORACLE-- SELECT * FROM (SELECT * FROM TAB_USERS ORDER BY DBMS_RANDOM.RANDOM()) WHERE RONUM=50 MYSQL-- SELECT * FROM TAB_USERS ORDER BY RAND() LIMIT 50 { ACCESS-- SELECT TOP 50
sql server--> select top 50 * from tab_users order by newid();
ORACLE--> SELECT * FROM (SELECT * FROM TAB_USERS ORDER BY DBMS_RANDOM.RANDOM()) WHERE RONUM
MYSQL--> SELECT * FROM TAB_USERS ORDER BY RAND() LIMIT 50
{
ACCESS--> SELECT TOP 50 * FROM TAB_USERS ORDER BY RND([字段])
这条语句在ACCESS中的查询结果是正确的，但在ASP.NET等后台代码要写成如下：
漂亮jQuery单选框/复选框美化插件Labelauty.js，支持自定义灰色按钮不可点、支持input控件定义选项直接提交后端即可获取数据还是非常方便的单选框/多选框美化JS插件，特别是在手机端使用，还是非常 适用的。
Random random=new Random(System.Guid.NewGuid().GetHashCode());
int val=random.Next();
string sql="SELECT TOP 50 * FROM TAB_USERS ORDER BY RND("+(-r)+"字段)";
