sql 分頁

package day20151026page;

public class Test {

    public static void main(String[] args) {
        System.out.println(tester(2,5));
    }
    public static String tester(int page,int pagesize){
        int start = (page-1)*pagesize + 1;
        int end  = page * pagesize;
        String sql = "select * from  "+
                        "(select rownum rn, e.* from "+
                            "(select empno,ename,sal from emp) e)"+
                     "where rn between "+start+ " and " + end+";";
        return sql;
    }

}