摘要：把C4的值 设置成变量 给变量取个名字叫 id 把界面的$yq 的值传递给变量ry 阅读全文

摘要：select * from ( select 1 as id , '张三' as name from dual union all select 2 as id , '李四' as name from dual union all select 2 as id , '李四' as name from 阅读全文