oracle 分页查询sql语句

1.

SELECT t.t_credit_id as creditId,

t.login_name as loginName,

t.long_pwd as loginPwd,

t.agin_pwd as againPwd

FROM (SELECT tc.t_credit_id,

tc.login_name,

tc.long_pwd,

tc.agin_pwd,

ROWNUM rn

FROM t_credit tc

where 1=1

and ROWNUM <=10

and tc.login_name like '%lisi%' --如查询条件写在里面是先分页在查询，写在外面先查询在分页

ORDER BY tc.crete_time DESC) t

WHERE t.rn >= 1;

2.

SELECT t.t_credit_id as creditId,

t.login_name as loginName,

t.long_pwd as loginPwd,

t.agin_pwd as againPwd,

t.id_card as IDCard,

t.fixed_telephone_number as fixedTelephoneNumber,

t.telephone_number as telephoneNumber,

t.e_mail as email,

t.address as address,

t.crete_time as createtime,

t.status as status

FROM (SELECT tc.t_credit_id,

tc.login_name,

tc.long_pwd,

tc.agin_pwd,

tc.id_card,

tc.fixed_telephone_number,

tc.telephone_number,

tc.e_mail,

tc.address,

tc.crete_time,

tc.status,

ROWNUM rn

FROM t_credit tc

) t

WHERE t.rn >= 1

AND t.rn <= 20

and t.login_name like '%l%'

ORDER BY t.crete_time DESC;

3.

SELECT * FROM news_detail;

--每页显示2条新闻信息，查看第1页新闻信息（新闻标题、作者、创建时间）的分页sql语句如下

--页码：currPageNo 1 =(currPageNo-1)*PAGESIZE+1 每页显示的记录数：pageSize 此例=2 =CURRPAGENO * PAGESIZE

SELECT id,title,author,createdate FROM (SELECT id,title,author,createdate,ROWNUM rn FROM news_detail) a

WHERE a.rn>=1 AND a.rn<=2

--每页显示2条新闻信息，查看第2页新闻信息（新闻标题、作者、创建时间）的分页sql语句如下

--页码：currPageNo 2 每页显示的记录数：pageSize 此例=2

SELECT id,title,author,createdate FROM (SELECT id,title,author,createdate,ROWNUM rn FROM news_detail) a

WHERE a.rn>=3 AND a.rn<=4

--每页显示2条新闻信息，查看第3页新闻信息（新闻标题、作者、创建时间）的分页sql语句如下

--页码：currPageNo 3 每页显示的记录数：pageSize 此例=2

SELECT id,title,author,createdate FROM (SELECT id,title,author,createdate,ROWNUM rn FROM news_detail) a

WHERE a.rn>=5 AND a.rn<=6

--起始记录数和结束记录数有什么特点？和页码与每页显示的记录有什么关系？

--页码：currPageNo 每页显示的记录数：pageSize 此例=2

SELECT id,title,author,createdate FROM (SELECT id,title,author,createdate,ROWNUM rn FROM news_detail) a

WHERE a.rn>=(currPageNo - 1) * pageSize + 1 AND a.rn<=currPageNo * pageSize