Table of Contents
环境
问题
解决
运行效果截图
小技巧
总结语法
参考资料
Home Database Mysql Tutorial 三种常用数据库(Oracle、MySQL、SQLServer)的分页之Oracle分页

三种常用数据库(Oracle、MySQL、SQLServer)的分页之Oracle分页

Jun 07, 2016 pm 03:08 PM
mysql oracle Commonly used database

环境 Oracle 11gR2 SQLPlus 问题 Oracle 分页 解决 --创建测试表SQL create table test 2 ( 3 id number primary key, 4 name varchar2(20) not null 5 );表已创建。--创建序列SQLSQL create sequence seq_wgb_test;序列已创建。--插入数据SQL insert into t

环境

Oracle 11gR2 + SQLPlus

 

问题

Oracle分页

 

解决

 

 

--创建测试表

SQL> create table test
  2  (
  3     id number primary key,
  4     name varchar2(20) not null
  5  );

表已创建。

--创建序列
SQL>
SQL> create sequence seq_wgb_test;

序列已创建。

--插入数据

SQL> insert into test(id, name) values(seq_wgb_test.nextval, 'test1');

已创建 1 行。

SQL> insert into test(id, name) values(seq_wgb_test.nextval, 'test2');

已创建 1 行。

SQL>
SQL> insert into test(id, name) values(seq_wgb_test.nextval, 'test3');

已创建 1 行。

SQL>
SQL> insert into test(id, name) values(seq_wgb_test.nextval, 'test4');

已创建 1 行。

SQL>
SQL> insert into test(id, name) values(seq_wgb_test.nextval, 'test5');

已创建 1 行。

SQL>
SQL> insert into test(id, name) values(seq_wgb_test.nextval, 'test6');

已创建 1 行。

SQL>
SQL> insert into test(id, name) values(seq_wgb_test.nextval, 'test7');

已创建 1 行。

SQL>
SQL> insert into test(id, name) values(seq_wgb_test.nextval, 'test8');

已创建 1 行。

SQL>
SQL> insert into test(id, name) values(seq_wgb_test.nextval, 'test9');

已创建 1 行。

SQL>
SQL> insert into test(id, name) values(seq_wgb_test.nextval, 'test10');

已创建 1 行。

SQL> insert into test(id, name) select seq_wgb_test.nextval, name from test;

已创建10行。

SQL> insert into test(id, name) select seq_wgb_test.nextval, name from test;

已创建20行。

SQL> insert into test(id, name) select seq_wgb_test.nextval, name from test;

已创建40行。

--执行分页

SQL> select t.*
  2  from
  3  (
  4     select rownum sn,te.*
  5     from test te
  6     where rownum  0;

        SN         ID NAME
---------- ---------- --------------------
         1          2 test1
         2          3 test2
         3          4 test3
         4          5 test4
         5          6 test5
         6          7 test6
         7          8 test7
         8          9 test8
         9         10 test9
        10         11 test10

已选择10行。
Copy after login


 

 

运行效果截图

 

三种常用数据库(Oracle、MySQL、SQLServer)的分页之Oracle分页

 

小技巧

 

快速插入数据:

 

insert into test(id, name) select seq_wgb_test.nextval, name from test;

Oracle中复制数据和MySQLSQLServer不一致,这里要注意下,因为使用的自增方式不同。

 

总结语法

 

Oracle中分页是使用子查询和rownum

 

select t.*

from

(

         select rownum sn,te.*

         from tableName te

         where rownum

)t

where t.sn > num * (page - 1);

 

--num:每页显示的行数

--page:第几页

 

对应于Web程序中分页类似:

select t.*

from

(

         select rownum sn,te.*

         from tableName te

         where rownum

)t

where t.sn > num * (pageNow - 1);

 

--pageNow:当前第几页

 

--pageSize:每页显示的记录数

 

参考资料

 

http://blog.csdn.net/wentasy/article/details/8200512

 

http://blog.csdn.net/wentasy/article/details/8200561

 

 

 

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