推荐: 使用 ADO.NET 访问 Oracle 9i 存储过程的介绍 ASP.NET调用oracle存储过程实现快速分页的步骤如下:
Oracle 9i 包定义: create or replace package MaterialManage
is TYPE T_CURSOR
IS REF
CURSOR;
Procedure Per_QuickPage
(
TbName
in varchar2,
-- 表名
FieldStr
in varchar2,
-- 字段集
RowFilter
in varchar2,
-- 过滤条件
SortStr
in varchar2,
-- 排序集
RownumFieldStr
in varchar2,
-- 分页条件
TotalCount out
number,
-- 总记录数
Cur_ReturnCur out T_CURSOR
-- 返回的游标
);
end MaterialManage;
Oracle 9i 包主体: create or replace package body MaterialManage
is Procedure Per_QuickPage
(
TbName
in varchar2,
-- 表 名
FieldStr
in varchar2,
-- 字段集
RowFilter
in varchar2,
-- 过滤条件
SortStr
in varchar2,
-- 排序集
MinRowNum
in number,
-- 分页小值
MaxRowNum
in number,
-- 分页大值
TotalCount out
number,
-- 总记录数
Cur_ReturnCur out T_CURSOR
)
is v_SourceTb1
varchar2(
3000);
-- 动态表名1
v_SourceTb2
varchar2(
3000);
-- 动态表名2
v_SourceTb3
varchar2(
3000);
-- 动态表名3
v_SourceTb4
varchar2(
3000);
-- 动态表名4
v_TotalCount
varchar2(
50);
-- 总记录数
v_sql
varchar2(
3000);
-- 动态sql
begin v_SourceTb1 :
= ''(
select '' || FieldStr
|| '' from '' || TbName
|| '') SourceTb1
'';
v_SourceTb2 :
= ''(
select * from '' || v_SourceTb1
|| '' where '' || RowFilter
|| '' '' || SortStr
|| '') SourceTb2
'';
v_SourceTb3 :
= ''(
select rownum
as Rowindex,SourceTb2.
* from '' || v_SourceTb2
|| '' where rownum
<= '' || MaxRowNum
|| '') SourceTb3
'';
v_SourceTb4 :
= ''(
select * from '' || v_SourceTb1
|| '' where '' || RowFilter
|| '') SourceTb4
'';
v_sql :
= '' select count(
*)
as TotalCount
from '' || v_SourceTb4;
execute immediate v_sql
into v_TotalCount;
TotalCount :
= v_TotalCount;
v_sql :
= '' select * from '' || v_SourceTb3
|| '' where RowIndex
>= '' ||MinRowNum;
open Cur_ReturnCur
for v_sql;
end Per_QuickPage;
END MaterialManage;
由于oracle有个rownum特性,所以分页的时候就是利用rownum来实现。如果大家还有什么更好的办法记得告诉我一声,多谢了,因为我测试了上面的分页方法效率并不是很高。
存储过程返回了两个参数:TotalCount :当前条件下的总记录数 Cur_ReturnCur :游标类型,就是所要读取的记录的集合
下面是ASP.NET中调用的代码:
/// <summary>
/// 调用存储过程实现快速分页
/// </summary>
/// <param name="TbName"> 表名称 </param>
/// <param name="FieldStr"> 字段名称 </param>
/// <param name="RowFilter"> 过滤条件 </param>
/// <param name="SortStr"> 排序字段 </param>
/// <param name="MinPageNum"> 分页小值 </param>
/// <param name="MaxPageNum"> 分页大值 </param>
/// <param name="TotalCount"> 总记录(需要返回) </param>
/// <returns> DataTable </returns>
public DataTable QuickPage(
string TbName,
string FieldStr,
string RowFilter,
string SortStr,
int MinRowNum,
int MaxRowNum,
ref int RecordCount)
{
OracleConnection conn =
new OracleConnection(ConfigurationSettings.AppSettings[
" OracleConnstr "].ToString());
OracleCommand cmd =
new OracleCommand();
cmd.Connection = conn;
cmd.CommandText =
" MaterialManage.Per_QuickPage ";
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add(
" TbName ",OracleType.VarChar,
50);
// 表 名
cmd.Parameters[
" TbName "].Direction = ParameterDirection.Input;
cmd.Parameters[
" TbName "].Value = TbName;
cmd.Parameters.Add(
" FieldStr ",OracleType.VarChar,
3000);
// 字段集
cmd.Parameters[
" FieldStr "].Direction = ParameterDirection.Input;
cmd.Parameters[
" FieldStr "].Value = FieldStr;
cmd.Parameters.Add(
" RowFilter ",OracleType.VarChar,
3000);
// 过滤条件
cmd.Parameters[
" RowFilter "].Direction = ParameterDirection.Input;
cmd.Parameters[
" RowFilter "].Value = RowFilter;
cmd.Parameters.Add(
" SortStr ",OracleType.VarChar,
3000);
// 排序字段
cmd.Parameters[
" SortStr "].Direction = ParameterDirection.Input;
cmd.Parameters[
" SortStr "].Value = SortStr;
cmd.Parameters.Add(
" MinRowNum ",OracleType.Number);
// 分页小值
cmd.Parameters[
" MinRowNum "].Direction = ParameterDirection.Input;
cmd.Parameters[
" MinRowNum "].Value = MinRowNum;
cmd.Parameters.Add(
" MaxRowNum ",OracleType.Number);
// 分页大值
cmd.Parameters[
" MaxRowNum "].Direction = ParameterDirection.Input;
cmd.Parameters[
" MaxRowNum "].Value = MaxRowNum;
cmd.Parameters.Add(
" TotalCount ",OracleType.Number);
// 页总记录数
cmd.Parameters[
" TotalCount "].Direction = ParameterDirection.Output;
cmd.Parameters[
" TotalCount "].Value =
0;
cmd.Parameters.Add(
" Cur_ReturnCur ",OracleType.Cursor);
// 返回的游标
cmd.Parameters[
" Cur_ReturnCur "].Direction = ParameterDirection.Output;
DataSet Ds =
new DataSet();
OracleDataAdapter adapter=
new OracleDataAdapter(cmd);
adapter.Fill(Ds);
conn.Close();
// 总记录数
RecordCount =
int.Parse(cmd.Parameters[
" TotalCount "].Value.ToString());
return Ds.Tables[
0];
}
本文转自钢钢博客园博客,原文链接:http://www.cnblogs.com/xugang/archive/2008/03/03/1088348.html,如需转载请自行联系原作者