分页存储过程(一)使用sql2005的新函数构造分页存储过程
其实在很多时候设计的度还是要把握的,不至于让自己陷入【非要把它设计成万能的分页存储过程】的怪圈中才是最重要的,因为我们还要留出时间还解决其他的很多问题,个人认为适度就可以了,留出一定的空间。也因为万能是不存在的,万物在一定的范畴之内都是合理的,出了范畴可能就没有合理的了。
1、Not in select top
2、idselect top 3、sql
C#中常用的分页存储过程小结 2005CTE,CTE http://www.cnblogs.com/nokiaguy/archive/2009/01/31/1381562.html
2005row_number(),rank,dense_rank,ntile
http://blog.csdn.net/htl258/archive/2009/03/20/4006717.aspx row_number()CTE
Declare @totalRecord int; 存储过程SQL如下,支持不定列,不定条件,多表联合,排序任意 Enterprise Library 4.1 下载地址: http://www.microsoft.com/downloads/details.aspx?FamilyId=1643758B-2986-47F7-B529-3E41584B6CE5&displaylang=en 示例代码,前台页面,前台为用户控件 |
EmptyDataText="没有符合条件的数据">
runat="server" />
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示例代码,后台代码
代码如下:using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Text;
using System.Data;
using System.Data.Common;
using Microsoft.Practices.EnterpriseLibrary.Common;
using Microsoft.Practices.EnterpriseLibrary.Data;
using Kimbanx.UCS.ForeignStudentAdmin.Model;
using Kimbanx.UCS.ForeignStudentAdmin.Common;
namespace Kimbanx.UCS.ForeignStudentAdmin.UserControl.UserControl
{
public partial class StudentDetailsTable : System.Web.UI.UserControl
{
private Database _db = DatabaseFactory.CreateDatabase();
private DbCommand _command;
private DbConnection _connection;
private DataSet _ds;
private string _classCode;
private string _classFullName;
private string _studentType;
private string _studentCount;
private string _queryStringWhere;
private DataTable _studentTable;
protected string SetBirthDate(object obj)
{
string result = string.Empty;
string temp = obj.ToString();
result = DateTime.Parse(temp).ToShortDateString();
return result;
}
protected string SetEnrollDate(object obj)
{
string result = string.Empty;
string temp = obj.ToString();
result = DateTime.Parse(temp).ToShortDateString();
return result;
}
protected void Filldata_dllPageSize()
{
for (int i = 1; i < 100; i++)
{
ddlPageSize.Items.Add(i.ToString());
}
ddlPageSize.SelectedIndex = 14;
}
protected void InitSession()
{
//Session["PageSize"] = 0;
Session["PageIndex"] = 1;
Session["PageCount"] = int.Parse(_studentCount) / 15 + 1;
}
///
/// 获取QueryString传递参数
///
protected void GetQueryStringPara()
{
_classCode = Request.QueryString["dwbh"];
_classFullName =HttpUtility.UrlDecode( Request.QueryString["dwmc"]);
_studentCount = Request.QueryString["studentCount"];
_studentType =HttpUtility.UrlDecode( Request.QueryString["studentType"]);
_queryStringWhere = Request.QueryString["where"];
}
protected void SetLabelText()
{
this.lblClassName.Text = _classFullName;
this.lblClassLevel.Text = GetClassInfo(_classCode).Level.ToString();
this.lblStudentCount.Text = _studentCount;
this.lblStudentType.Text = _studentType;
}
#region
/////
///// 获取学员数据
/////
/////
/////
/////
/////
/////
/////
//protected DataTable GetStudentData(string strSelect,string strFrom,string strWhere,int pageSize,int pageIndex)
//{
// _command = _db.GetStoredProcCommand("StudentPaging");
// _db.AddInParameter(_command,"StrSelect",DbType.String,"zpadress,xmjz,xmjy,jx,zw,gj,sjyqk,zj,csrq,rwrq,xzz,dhd,dhx,fcjp,hzh,xh");
// _db.AddInParameter(_command,"StrFrom","tx_xyzl");
// _db.AddInParameter(_command,"StrWhere",strWhere );
// _db.AddInParameter(_command,"StrOrder","id");
// _db.AddInParameter(_command,"PageSize",DbType.Int32,pageSize );
// _db.AddInParameter(_command,"PageIndex",pageIndex );
// _studentTable = _db.ExecuteDataSet(_command).Tables[0];
// return _studentTable;
//}
#endregion
protected string GetStudentImageUrl(object imageUrl)
{
string serverUrl = http://192.168.0.1/admin;
string imageurl = string.Empty;
if (!(imageUrl == null))
{
string temp = imageUrl.ToString().Trim();
if (!string.IsNullOrEmpty(temp))
{ imageurl = string.Format("{0}{1}",serverUrl,temp.Substring(temp.IndexOf("/"))); }
}
return imageurl;
}
///
/// 绑定分页之后的数据
///
///
///
protected void BindStudentData(int pageSize,int pageIndex)
{
switch (_queryStringWhere)
{
case "jx":
this.gvStudent.DataSource = Helper.StudentPagingResult(
"zpadress,xh",
"student",
string.Format("dwbh='{0}' and jx='{1}'",_classCode,_studentType),
"id",
pageSize,
pageIndex);
this.gvStudent.DataBind();
break;
case "gj":
this.gvStudent.DataSource = Helper.StudentPagingResult(
"zpadress,
string.Format("dwbh='{0}' and gj='{1}'",
pageIndex);
this.gvStudent.DataBind();
break;
case "allyear":
this.gvStudent.DataSource = Helper.StudentPagingResult(
"s.zpadress,s.xmjz,s.xmjy,s.jx,s.zw,s.gj,s.sjyqk,s.zj,s.csrq,s.rwrq,s.xzz,s.dhd,s.dhx,s.fcjp,s.hzh,s.xh",
"student as s inner join class as dw on s.dwbh=dw.bh",
string.Format(@"s.dwbh='{0}' and (dw.kxsj>=convert(datetime,'{1}'+'-01-01',120) and
dw.kxsj<=convert(datetime,'{1}'+'-12-31',120) or dw.bysj>=convert(datetime,120) and
dw.bysj<=convert(datetime,120)) ",
"s.id",
pageIndex);
this.gvStudent.DataBind();
break;
case "new":
this.gvStudent.DataSource = Helper.StudentPagingResult(
"s.zpadress,
pageIndex);
this.gvStudent.DataBind();
break;
}
}
protected void Page_Load(object sender,EventArgs e)
{
if (UserAuthHelper.GetUserAuthType("1") == UserAuthEnum.Admin||
UserAuthHelper.GetUserAuthType("2") == UserAuthEnum.CurrentStudentDetails)
{
GetQueryStringPara();
SetLabelText();
if (GetStudentCount() == 0)
{
StudentCountZero();
return;
}
if (!IsPostBack)
{
Filldata_dllPageSize();
SetPageIndex(1);
SetPageCount();
BindStudentData(GetPageSize(),GetPageIndex());
}
else
{
}
}
else
{
this.Controls.Add(new LiteralControl("您没有相应的权限,请联系管理员"));
}
}
///
/// 获取班级信息,班级全称,班级级别
///
///
///
protected ClassEntity GetClassInfo(string classCode)
{
ClassEntity entity = new ClassEntity();
entity.Code = classCode;
_command = _db.GetStoredProcCommand("ClassInfo");
_db.AddInParameter(_command,"bh",classCode);
using (IDataReader reader = _db.ExecuteReader(_command))
{
while (reader.Read())
{
entity.FullName = reader.GetString(1);
entity.Level = reader.GetInt32(2);
}
}
return entity;
}
#region Get and Set PageSize
protected int GetPageSize()
{
return int.Parse(ddlPageSize.SelectedValue);
}
protected void SetPageSize(int pageSize)
{
this.ddlPageSize.Text = pageSize.ToString();
}
#endregion
#region Get and Set PageIndex
protected int GetPageIndex()
{
return int.Parse(this.lblPageIndex.Text.Trim());
}
protected void SetPageIndex(int pageIndex)
{
this.lblPageIndex.Text = pageIndex.ToString();
}
#endregion
#region Get and Set PageCount
protected int GetPageCount()
{
return int.Parse(this.lblPageCount.Text.Trim());
}
protected void SetPageCount()
{
int studentCount = GetStudentCount();
int pageSize = GetPageSize();
if (studentCount % pageSize == 0)
{
this.lblPageCount.Text = (studentCount / pageSize).ToString();
}
else
{
this.lblPageCount.Text = (studentCount / pageSize + 1).ToString();
}
}
#endregion
#region Get and Set StudentCount
protected int GetStudentCount()
{
return int.Parse(this.lblStudentCount.Text.Trim());
}
protected void SetStudentCount(int studentCount)
{
this.lblStudentCount.Text = studentCount.ToString();
}
#endregion
protected void StudentCountZero()
{
this.lblPageIndex.Text = "0";
this.lblPageCount.Text = "0";
}
protected void LinkButton_Command(object sender,CommandEventArgs e)
{
if (GetStudentCount() == 0)
{
StudentCountZero();
return;
}
int pageCount = GetPageCount();
int pageIndex = GetPageIndex();
int pageSize = GetPageSize();
switch (e.CommandArgument.ToString())
{
case "first":
if (pageIndex == 1) { }
else
{
pageIndex = 1;
SetPageIndex(pageIndex);
pageSize = GetPageSize();
SetPageCount();
BindStudentData(pageSize,pageIndex);
}
break;
case "next":
if (pageCount == pageIndex & pageIndex == 1)
{ }
else if (pageIndex == 1 && pageCount > pageIndex)
{
SetPageIndex(++pageIndex);
pageSize = GetPageSize();
SetPageCount();
BindStudentData(pageSize,pageIndex);
}
else if (pageIndex > 1 && pageCount == pageIndex)
{ }
else
{
SetPageIndex(++pageIndex);
pageSize = GetPageSize();
SetPageCount();
BindStudentData(pageSize,pageIndex);
}
break;
case "prev":
if (pageIndex == 1)
{ }
else if (pageIndex == pageCount && pageIndex > 1)
{
SetPageIndex(--pageIndex);
pageSize = GetPageSize();
SetPageCount();
BindStudentData(pageSize,pageIndex);
}
else if (pageIndex == 2)
{
SetPageIndex(1);
pageSize = GetPageSize();
SetPageCount();
BindStudentData(pageSize,pageIndex);
}
else
{
SetPageIndex(--pageIndex);
pageSize = GetPageSize();
SetPageCount();
BindStudentData(pageSize,pageIndex);
}
break;
case "last":
if (pageCount == pageIndex)
{ }
else
{
SetPageIndex(pageCount);
pageIndex = GetPageIndex();
SetPageCount();
BindStudentData(pageSize,pageIndex);
}
break;
default:
SetPageIndex(1);
pageSize = GetPageSize();
SetPageCount();
BindStudentData(pageSize,pageIndex);
break;
}
}
protected void ddlPageSize_SelectedIndexChanged(object sender,EventArgs e)
{
int pageIndex = GetPageIndex();
int pageCount = GetPageCount();
int pageSize = GetPageSize();
pageIndex = 1;
SetPageIndex(pageIndex);
SetPageSize(int.Parse(((DropDownList)sender).SelectedValue));
pageSize=GetPageSize();
SetPageCount();
BindStudentData(pageSize,pageIndex);
}
}
}
最后再贴一个圆友的通用存储过程,原文地址:通用存储过程分页(使用ROW_NUMBER()和不使用ROW_NUMBER()两种情况)性能分析
代码如下:set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
go
-- =============================================
-- Author:
-- Create date: <2010-03-03>
-- Description:
-- 适合从单个表查询数据
-- =============================================
ALTER PROCEDURE [dbo].[Proc_GetDataPaged2]
@tblName varchar(255),-- 表名如:'xtest'
@strGetFields varchar(1000) = '*',-- 需要返回的列如:'xname,xdemo'
@strOrder varchar(255)='',-- 排序的字段名如:'order by id desc'
@strWhere varchar(1500) = '',-- 查询条件(注意:不要加where)如:'xname like ''%222name%'''
@beginIndex int=1,--开始记录位置
--@pageIndex int = 1,-- 页码如:2
@pageSize int = 50,-- 每页记录数如:20
@recordCount int output,-- 记录总数
@doCount bit=0 -- 非0则统计,为0则不统计(统计会影响效率)
AS
declare @strSQL varchar(5000)
declare @strCount nvarchar(1000)
--总记录条数
if(@doCount!=0)
begin
if(@strWhere !='')
begin
set @strCount='set @num=(select count(1) from '+ @tblName + ' where '+@strWhere+' )'
end
else
begin
set @strCount='set @num=(select count(1) from '+ @tblName + ' )'
end
EXECUTE sp_executesql @strCount,N'@num INT output',@RecordCount output
end
if @strWhere !=''
begin
set @strWhere=' where '+@strWhere
end
set @strSQL='SELECT * FROM (SELECT ROW_NUMBER() OVER ('+@strOrder+') AS ROWID,'
set @strSQL=@strSQL+@strGetFields+' FROM ['+@tblName+'] '+@strWhere
set @strSQL=@strSQL+') AS sp WHERE ROWID BETWEEN '+str(@beginIndex)
set @strSQL=@strSQL+' AND '+str(@beginIndex+@PageSize)
--set @strSQL=@strSQL+') AS sp WHERE ROWID BETWEEN '+str((@PageIndex-1)*@PageSize+1)
--set @strSQL=@strSQL+' AND '+str(@PageIndex*@PageSize)
exec (@strSQL)
再来一个
代码如下:set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
go
-- =============================================
-- Author:
-- Create date:
-- Description: 分页获取商品信息
--调用方法: Proc_GetProductPaged '2','',0
-- =============================================
ALTER PROCEDURE [dbo].[Proc_GetProductPaged]
-- Add the parameters for the stored procedure here
@ProductType smallint=1,--商品类型,1全部2种子3农药4肥料
@StrSelect varchar(max)='',--显示字段
@StrFrom varchar(max)='',--查询来源
@StrWhere varchar(max)='',--查询条件
@StrOrder varchar(max)='',--排序规范
@PageSize int=50,--记录数
@BeginIndex int=1,--开始记录位置
-- @PageIndex int=1,--页码
@Count int output,--记录总数
@DoCount bit=0-- 1则统计,为0则不统计(统计会影响效率)
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
declare @seedtype int
set @seedtype=2
declare @pestype int
set @pestype=3
declare @ferttype int
set @ferttype=4
create table #product
(
productid uniqueidentifier,
productname varchar(50),
className varchar(50),
productType int,
createdate datetime,
modifydate datetime
-- companyid uniqueidentifier
)
declare @strSQL varchar(max)
declare @strCount nvarchar(max)
--计算总记录条数
if(@DoCount!=0)
begin
if(@StrWhere !='')
begin
if(@ProductType=1)
begin
set @strCount='set @num=(select count(1) from Seed where '+@StrWhere+' )'+
'+(select count(1) from pesticide where '+@StrWhere+' )'+
'+(select count(1) from fertilizer where '+@StrWhere+' )'
end
else if(@ProductType=2)
begin
set @strCount='set @num=(select count(1) from Seed where '+@StrWhere+' )'
end
else if(@ProductType=3)
begin
set @strCount='set @num=(select count(1) from pesticide where '+@StrWhere+' )'
end
else if(@ProductType=4)
begin
set @strCount='set @num=(select count(1) from fertilizer where '+@StrWhere+' )'
end
end
else
begin
if(@ProductType=1)
begin
set @strCount='set @num=(select count(1) from Seed )'+
'+(select count(1) from pesticide )'+
'+(select count(1) from fertilizer )'
end
else if(@ProductType=2)
begin
set @strCount='set @num=(select count(1) from Seed )'
end
else if(@ProductType=3)
begin
set @strCount='set @num=(select count(1) from pesticide )'
end
else if(@ProductType=4)
begin
set @strCount='set @num=(select count(1) from fertilizer )'
end
end
EXECUTE sp_executesql @strCount,@Count output
end
--分页获取数据
if (@StrWhere !='' )
begin
set @StrWhere=' where '+@StrWhere
end
if(@ProductType=1)
begin
set @strSQL='insert into #product
select s.seedid,s.seedname,cc.cropclassname,'+cast(@seedtype as varchar(1))+',s.createdate,s.modifydate
from seed as s inner join cropclass as cc on s.cropclasscode=cc.cropclasscode'
+@StrWhere+
'union
select p.pesticideid,p.pesname,pc.pesclassname,'+cast(@pestype as varchar(1))+',p.createdate,p.modifydate
from pesticide as p inner join pesclass as pc on p.pesclasscode=pc.pesclasscode'
+@StrWhere+
'union
select f.fertilizerid,f.fertname,fc.fertclassname,'+cast(@ferttype as varchar(1))+',f.createdate,f.modifydate
from fertilizer as f inner join fertilizerclass as fc on f.fertclasscode=fc.fertclasscode'
+@StrWhere
set @strSQL= @strSQL+' SELECT * FROM (SELECT ROW_NUMBER() OVER ('+@StrOrder+') AS ROWID,'
set @strSQL=@strSQL+'* FROM [#product] '--+@StrWhere
set @strSQL=@strSQL+') AS sp WHERE ROWID BETWEEN '+str(@BeginIndex)
set @strSQL=@strSQL+' AND '+str(@BeginIndex+@PageSize-1)
-- set @strSQL=@strSQL+') AS sp WHERE ROWID BETWEEN '+str((@PageIndex-1)*@PageSize+1)
-- set @strSQL=@strSQL+' AND '+str(@PageIndex*@PageSize)
end
else
begin
set @strSQL='insert into #product select '+@StrSelect+
' from '+@StrFrom+@StrWhere
exec (@strSQL)
set @strSQL=''
set @strSQL='SELECT * FROM (SELECT ROW_NUMBER() OVER ('+@strOrder+') AS ROWID,'
set @strSQL=@strSQL+'* FROM [#product]'+@strWhere
set @strSQL=@strSQL+') AS sp WHERE ROWID BETWEEN '+str(@BeginIndex)
set @strSQL=@strSQL+' AND '+str(@BeginIndex+@PageSize-1)
-- set @strSQL=@strSQL+') AS sp WHERE ROWID BETWEEN '+str((@PageIndex-1)*@PageSize+1)
-- set @strSQL=@strSQL+' AND '+str(@PageIndex*@PageSize)
end
-- else if(@ProductType=2)
-- begin
-- set @strSQL='insert into #product select '+@StrSelect+','+@seedtype+
-- 'from '+@StrFrom+@StrWhere
-- exec @strSQL
-- set @strSQL=''
-- set @strSQL='SELECT * FROM (SELECT ROW_NUMBER() OVER ('+@strOrder+') AS ROWID,'
-- set @strSQL=@strSQL+@StrSelect+' FROM[#product]'+@strWhere
-- set @strSQL=@strSQL+') AS sp WHERE ROWID BETWEEN '+str((@PageIndex-1)*@PageSize+1)
-- set @strSQL=@strSQL+' AND '+str(@PageIndex*@PageSize)
-- end
-- else if(@ProductType=3)
-- begin
-- set @strSQL='SELECT * FROM (SELECT ROW_NUMBER() OVER ('+@strOrder+') AS ROWID,'
-- set @strSQL=@strSQL+@StrSelect+' FROM[#product]'+@StrWhere
-- set @strSQL=@strSQL+') AS sp WHERE ROWID BETWEEN '+str((@PageIndex-1)*@PageSize+1)
-- set @strSQL=@strSQL+' AND '+str(@PageIndex*@PageSize)
-- end
-- else if(@ProductType=4)
-- begin
-- set @strSQL='SELECT * FROM (SELECT ROW_NUMBER() OVER ('+@strOrder+') AS ROWID,'
-- set @strSQL=@strSQL+@StrSelect+' FROM[#product]'+@StrWhere
-- set @strSQL=@strSQL+') AS sp WHERE ROWID BETWEEN '+str((@PageIndex-1)*@PageSize+1)
-- set @strSQL=@strSQL+' AND '+str(@PageIndex*@PageSize)
-- end
exec (@strSQL)
drop table #product
END
(编辑:李大同)
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