oracle 遞歸查詢

1、站點表 lw_site

        站點id            站點名稱             站點路徑

        lw_site_id       site_name         static_dir

2、欄目表 lw_channel

        欄目id               站點id        欄目名稱  

  lw_channel_id         lw_site_id     channel_name

3、文章表lw_content

    文章id                    欄目id                文章標題                文章發佈時間            文章發佈狀態

 lw_content_id       lw_channel_id          article_title               publish_date        publish_state

 

查詢站點下，所屬欄目爲「警務資訊」及其子孫欄目，發佈時間在startTime和endTime之間，發佈狀態不爲「09」的文章數量？

select ls.site_name,ls.static_dir,count(ls.site_name) as total from lw_site ls,

(select ch.lw_channel_id as channelid,ch.lw_site_id as siteid from lw_channel ch start with ch.channel_name ='警務資訊' connect by prior ch.lw_channel_id = ch.parent_id ) tempt,

(select c.lw_channel_id as chnnalid2,c.status as statue from lw_content c where c.publish_date > to_date('"+ startDate +"','yyyy-mm-dd hh24:mi:ss')and c.publish_date < to_date('"+ endDate +"','yyyy-mm-dd hh24:mi:ss')) temp2

where tempt.siteid = ls.lw_site_id

and temp2.chnnalid2 = tempt.channelid and ls.parent_id ='lw_site_id'

and temp2.statue <> '09'

group by ls.site_name,ls.static_dir

order by total desc