orAClE多表查询 相关图文在线查询

原查询条件select u.userid,u.userid,u.loginName,t.content from useri...

oracle使用rownum伪列可以实现分页,三表连接分页示例代码如下: select * from (select rownum r,k.kch,k.kcm,cj.cj,x.xh,x.xm from KCB k,CJB cj,XSB x where k.kch = cj.kch and cj.xh = x.xh and rownum0特别注意这样外层查询时由于内层查询...

oracle的多条件多表查询: A表和B表,A的b_id表引用B表的id A表中有字段...

select a.b_id,a.a_food,b.b_name from a inner join b on a.b_id = b.id