mysql与oracle的分页查询语句 oracle分页查询语句怎么写每页查询10条
mysql与oracle的分页查询语句?
Oracle分页查询格式:
以下是代码片段:
SELECT * FROM
(
SELECT A.*, ROWNUM RN
FROM (SELECT * FROM TABLE_NAME) A
WHERE ROWNUM <= 40
)
WHERE RN >= mysql
mysql> SELECT * FROM table LIMIT 5,10 // 检索记录行 6-15 ,注意,10为偏移量
//为了检索从某一个偏移量到记录集的结束所有的记录行,可以指定第二个参数为 -1:
mysql> SELECT * FROM table LIMIT 95,-1 // 检索记录行 96-last.
//如果只给定一个参数,它表示返回最大的记录行数目:
mysql> SELECT * FROM table LIMIT 5 //检索前 5 个记录行 //也就是说,LIMIT n 等价于 LIMIT 0,n。
oracle分页查询语句怎么写每页查询10条
(rownum):
select * from
(select a.*,rownum row_num from
(select * from mytable t order by t.id desc) a
) b
where b.row_num between 1 and 或者(row_number()):
select tname,tabtype from (
select tname,tabtype,row_number() over ( order by tname ) rn from tab
) where rn between 1 and 更多 mysql 、sqlserver 相关 分页请百度搜索:软皇
oracle 数据库分页查询有几种方法
ROWNUM是伪列,只能= 所以需要给ROWNUM起个别名,变成逻辑列后来比较 select * from (select rownum as num,a.* from (select * from test order by 1 asc) a) t where t.num>=20 and t.num
Oracle多表联查分页
那你就把table1,table2需要的列名写出来啊:
select *
from
(SELECT t1.a,t1,b,t1,c, .... ,t2.a a2,t2,b b2,t2,c c2 ...,rownum FROM table1 t1 ,table2 t2 )
where rownum > (pagenum - 1) * 5 and rownum <= (pagenum) * 5
oracle数据库分页查询,
ROWNUM是伪列,只能<=,不能>=
所以需要给ROWNUM起个别名,变成逻辑列后来比较
select *
from (select rownum as num,a.* from (select * from test order by 1 asc) a) t
where t.num>=20
and t.num<=40
你写的可以修改为:
select *
from (select ROWNUM as num,A.* from (select * from test) A where rownum <= 40)
where num >= 20
oracle 连接两个表再进行分页查询
select * from (select * from table1 t1 ,table2 t2 ,rownum r where t1.id=t2.id and ^条件^) where t between n and m这就可以了,where后面跟两个表的关系,查询第N到第M条数据
oracle 分页 外键 查询 表t_user主键ID 表t_message 主键 ID 外键 userId
select tt.* from(select ROWNUM rn ,u.*,m.* from t_message m,t.user u)tt where rn>0 and rn<10
其实是可以的,你把id重新的定义个新名字就可以了。
select tt.* from(select ROWNUM rn ,u.id uid, m.id mid, u.*,m.* from t_message m,t.user u)tt where rn>0 and rn<10
还有就是你可以使用子查询。
select tt.* from t_message tt where tt.user_id in (select user_id from t_user)
oracle分页查询怎么做?
select * from (select rownum as rn,t.* from News_Censorinfo t) m where m.rn > (5-1)*pagesize and m.rn <= 5*pagesize