日期:2014-05-17 浏览次数:21357 次
create or replace procedure fenye(tablename in varchar2,
pagesize1 in number, -- 每页显示的记录数
pagenow in number, --显示当前页数
myrows out number, --总记录数
mypagecount out number, --总页数
p_cursor out testpackage.test_cursor) --返回记录集
is
--定义SQL语句 字符串
v_sql varchar2(1000);
v_begin number := (pagenow - 1) * pagesize1 + 1;
v_end number := pagenow * pagesize1;
begin
--执行部分
v_sql := 'select ename from (select t1.*, rownum rn from (select * from ' ||
tablename || ' order by sal) t1 where rownum<=' || v_end ||
') where rn >=' || v_begin;
--把游标和SQL关联
open p_cursor for v_sql;
--计算 myrows 和 mypagecount
--@组织一个sql语句
v_sql := 'select count(*) from ' || tablename;
--执行sql,并把返回值赋给 myrows
execute immediate v_sql
into myrows;
--计算mypagecount
if mod(myrows, pagesize1) = 0 then
mypagecount := myrows / pagesize1;
else
mypagecount := myrows / pagesize1 + 1;
end if;
end;
------解决方案--------------------
SQL> declare
2 v_count number;
3 v_pagecount number;
4 v_cur_emp testpackage.test_cursor;
5 v_emp emp.ename%type;
6 begin
7 fenye('emp', 3, 2, v_count, v_pagecount, v_cur_emp);
8 loop
9 fetch v_cur_emp into v_emp;
10 exit when v_cur_emp%notfound;
11 dbms_output.put_line(v_emp);
12 end loop;
13 end;
14 /
WARD
MART IN
MILL ER
PL/SQL procedure successfully completed
SQL>