栏目排序:
order by `classid` desc 按栏目ID降序order by `classid` asc按栏目ID升序order by myorder desc按栏目自定义排序 order by myorder asc 按栏目自定义降序
栏目排序:
order by `classid` desc 按栏目ID降序order by `classid` asc按栏目ID升序order by myorder desc按栏目自定义排序 order by myorder asc 按栏目自定义降序