alter PROCEDURE pagination
@tblName varchar(255), -- 表名
@strGetFields varchar(1000) = '*', -- 需要返回的列
@fldName varchar(255)='', -- 排序的字段名
@PageSize int , -- 页尺寸
@PageIndex int, -- 页码
@doCount bit , -- 返回记录总数, 非 0 值则返回
@OrderType bit , -- 设置排序类型, 非 0 值则降序
@strWhere varchar(1500) = '' -- 查询条件 (注意: 不要加 where)
--@result varchar(1000) output
AS
declare @strSQL varchar(5000) -- 主语句
declare @strTmp varchar(110) -- 临时变量
declare @strOrder varchar(400) -- 排序类型
if @doCount!=0
begin
if @strWhere!=''
set @strSQL='select count(*) as Total from [' + @tblName + '] where '+@strWhere
else
set @strSQL = 'select count(*) as Total from [' + @tblName + ']'
end
--以上代码的意思是如果@doCount传递过来的不是0，就执行总数统计。以下的所有代码都是@doCount为0的情况
else
begin
--如果@OrderType不是0，就执行降序，这句很重要！
if @OrderType!=0
begin
set @strTmp='<(select min'
set @strOrder='order by ['+@fldName+'] desc'
end
else
begin
set @strTmp='>(select max'
set @strOrder='order by ['+@fldName+'] asc'
end
--如果是第一页就执行以下代码，这样会加快执行速度
if @PageIndex=1
begin
if @strWhere!=''
set @strSQL='select top '+str(@PageSize)+' '+@strGetFields+' from ['+@tblName+'] where '+@strWhere+' '+@strOrder
else
set @strSQL='select top'+str(@PageSize)+' '+@strGetFields+' from ['+@tblName+']'+@strOrder
end
else
begin
--以下代码赋予了@strSQL以真正执行的SQL代码
set @strSQL='select top '+str(@PageSize)+' '+@strGetFields+' from ['+@tblName+'] where ['+@fldName+']'+@strTmp+'(['+@fldName+']) from (select top '
+str((@PageIndex-1)*@PageSize) + ' ['+ @fldName + '] from ['+@tblName+']'+@strOrder+') as tblTmp)'+@strOrder
if @strWhere!=''
set @strSQL='select top '+str(@PageSize)+' '+@strGetFields+' from ['+@tblName+'] where ['+@fldName+']'+@strTmp+'(['+@fldName+']) from (select top '
+str((@PageIndex-1)*@PageSize) +' ['+@fldName+'] from ['+@tblName+'] where '+@strWhere+' '+@strOrder+') as tblTmp) and '+@strWhere+' '+@strOrder
end
/*
*/
--set @result=@strSQL
end
exec(@strSQL)
GO
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
DataTable dt=GetCustomersData("Customers","CustomerID,CompanyName","CustomerID",10,2,0,1,"").Tables[0];
GridView1.DataSource = dt;
GridView1.DataBind();
}
}
private DataSet GetCustomersData(string tblName, string strGetFields, string fldName, int PageSize, int PageIndex, int doCount, int OrderType, string strWhere)
{
string conns = ConfigurationManager.ConnectionStrings["NorthwindConnectionString"].ToString();
string connString = ConfigurationSettings.AppSettings["NorthwindConnectionString"];
SqlConnection conn = new SqlConnection(connString);
SqlCommand comm = new SqlCommand("pagination",conn);
comm.Parameters.Add(new SqlParameter("@tblName",SqlDbType.VarChar));//表名
comm.Parameters[0].Value = tblName;
comm.Parameters.Add(new SqlParameter("@strGetFields", SqlDbType.VarChar));//返回的列
comm.Parameters[1].Value = strGetFields;
comm.Parameters.Add(new SqlParameter("@fldName", SqlDbType.VarChar));//排序的字段名
comm.Parameters[2].Value = fldName;
comm.Parameters.Add(new SqlParameter("@PageSize", SqlDbType.Int));//页尺寸
comm.Parameters[3].Value = PageSize;
comm.Parameters.Add(new SqlParameter("@PageIndex", SqlDbType.Int));//页码
comm.Parameters[4].Value = PageIndex;
comm.Parameters.Add(new SqlParameter("@doCount", SqlDbType.Int));//是否返回记录总数，0为不返回，1为返回
comm.Parameters[5].Value = doCount;
comm.Parameters.Add(new SqlParameter("@OrderType", SqlDbType.Int));//设置排序类型，0为升序，非0为降序
comm.Parameters[6].Value = OrderType;
comm.Parameters.Add(new SqlParameter("@strWhere", SqlDbType.VarChar));//where语句
comm.Parameters[7].Value = strWhere;
comm.CommandType = CommandType.StoredProcedure;
SqlDataAdapter dataAdapter = new SqlDataAdapter(comm);
DataSet ds = new DataSet();
dataAdapter.Fill(ds);
return ds;
}
declare @answer varchar(1000)
exec pagination 'Customers','CustomerID,CompanyName','CustomerID',10,2,0,1,'CustomerID>''A''',@answer output
select @answer
----------------------------------------------------------------------
select top 10 CustomerID,CompanyName
from [Customers]
where [CustomerID]>
(
select max([CustomerID])
from (
select top 10 [CustomerID]
from [Customers]
order by [CustomerID] asc
) as tblTmp
)
order by [CustomerID] asc
select top 10 CustomerID,CompanyName
from [Customers]
where [CustomerID]<
(
select min([CustomerID])
from (
select top 10 [CustomerID]
from [Customers]
order by [CustomerID] desc
) as tblTmp
)order by [CustomerID] desc
select top 10 CustomerID,CompanyName
from [Customers]
where [CustomerID]<
(
select min([CustomerID])
from
(
select top 10 [CustomerID]
from [Customers] where CustomerID>'A' order by [CustomerID] desc) as tblTmp) and CustomerID>'A' order by [Cu