.net海量分页数据存储过程
前一段时间做了一个海量的数据存储过程,并做了一个测试版的程序。希望对大家有所帮助。 网上很多这样的存储过程,但是依次试过之后,还是这样的分页较好,并且网上很少有测试程序,即使找到了存储过程,但是调用过程也极为麻烦。
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--支持任意排序的分页存储过程
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![](https://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif)
CREATE 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)
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
if @OrderType != 0
begin
set @strTmp = "<(select min"
set @strOrder = " order by [" + @fldName +"] desc"
--如果@OrderType不是0,就执行降序,这句很重要!
end
else
begin
set @strTmp = ">(select max"
set @strOrder = " order by [" + @fldName +"] asc"
end
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
--如果是第一页就执行以上代码,这样会加快执行速度
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
end
exec (@strSQL)
GO
@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)
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
if @OrderType != 0
begin
set @strTmp = "<(select min"
set @strOrder = " order by [" + @fldName +"] desc"
--如果@OrderType不是0,就执行降序,这句很重要!
end
else
begin
set @strTmp = ">(select max"
set @strOrder = " order by [" + @fldName +"] asc"
end
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
--如果是第一页就执行以上代码,这样会加快执行速度
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
end
exec (@strSQL)
GO
调用的程序(为了通用性,我写了一个方法,大家可以提意见,也可以对其进行修改,多多交换意见,共同进步)
![](https://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif)
private static DataSet GetCustomersData(string tblName, string strGetFields,string fldName, int PageSize, int PageIndex, int doCount, int OrderType, string strWhere)
{
string connString = ConfigurationSettings.AppSettings["connstr"];
SqlConnection conn = new SqlConnection(connString);
SqlCommand comm = new SqlCommand("pagination3", 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;
}
{
string connString = ConfigurationSettings.AppSettings["connstr"];
SqlConnection conn = new SqlConnection(connString);
SqlCommand comm = new SqlCommand("pagination3", 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;
}