SQL查询排行
SQL code:
sql="select name,channelid from model_channel where channelid in (select rootchannel from model_content group by rootchannel order by sum(hits) desc) and rootchannel=81"
ACCESS数据库.为什么读不到值?返回空记录集.
我直接运行select rootchannel from model_content group by rootchannel order by sum(hits) desc时它弹出一个窗口.提示我输入参数rootchannel
输入了rootchannel就能查出来.不输入就不能查询.
rootchannel是根菜单的ID.
ACCESS 帮顶..
select name,channelid
from model_channel
where channelid
in (select rootchannel from model_content group by rootchannel)
-- order by sum(hits) desc)
and rootchannel=81
子句里面要用ORDER BY 的,一般要加TOP N否则应该会报错的
access 的建议转版,帮顶.
sql="select a.name,a.channelid
from model_channel a, model_content b
where a.channelid =b.rootchannel and a.rootchannel=81"
select name,channelid
from model_channel
where channelid in
(select rootchannel from model_content group by rootchannel order by sum(hits) desc)
and rootchannel=81
想不出你这里的排序有什么意义
恩.自己解决了.写错了一个字段.导致出错..谢谢各位..
相关问答：
执行的顺序：
1）文件浏览框（选择文件使用）
选择好文件后
点击一个导入按钮的时候 ，把上面上传框里的csv文件以一个ID为文件名，上传到**/**文件夹下
2）读取这个文件夹下的csv的文件，转换成sql
3 ......
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jas ......
select count(1) from FX_RETURNBOOKCHECKLIST fxreturnbo0_ where fxreturnbo0_.BOOKID='164 ' AND fxreturnbo0_.RETURNID='00025.S0000001'
上面一个简单的SQL,执行时间2.6� ......
字段1,字段2.....字段N,Status,ParentID
1,Name1....test1,1,99
1,Name1....test1,3,99
1,Name2....test2,1,101
1,Name2....test2,3,101
1,Name3....test3,2,101
1,Name1....test1,4,101
想要的结果是:
1,Na ......
id url rank ......
