oracle和mysql查询所有表（Oracle、MySQL和SqlServe三种数据库分页查询语句的区别介绍）

String sql = "select top "+pageRecord +" * from addressbook where id not in (select top "+(currentPage-)*pageRecord +" id from t_user)"; 
// (currentPage-)*pageRecord : 是指从第几个记录开始 

select top 20 * from addressbook where id not in (select top 10 id from addressbook)

String sql = "select * from addressbook where limit "+(currentPage-)*pageRecord +","+pageRecord +""; 
//select * from 表名 【条件】limit M,N; 
//M为从第几个记录开始，比如每页显示条记录，第二页就必须从第条记录开始 
//N每页读几个数据 

select * from addressbook where limit 10,10

String sqls = "select * from ( select rownum rn,t.* from addressbook t where rownum <= "+currentPage*pageRecord+" ) where rownum > "+(currentPage -1)*pageRecord; 

select * from ( select rownum rn,t.* from addressbook where rownum<= 20 ) where rownum > 10