/****** Object: StoredProcedure [dbo].[usp_CommonDataResourcePaged] Script Date: 2018/4/20 9:01:14 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Description: <通用的数据分页存储过程>
-- =============================================
create PROCEDURE [dbo].[usp_CommonDataResourcePaged]
(
@TableName nvarchar(200), ----要显示的表或多个表的连接
@FieldList nvarchar(1500) = '*', ----要显示的字段列表
@PageSize int = 20, ----每页显示的记录个数
@PageNumber int = 1, ----要显示那一页的记录
@SortFields nvarchar(1000) = null, ----排序字段列表或条件
@EnabledSort bit = 0, ----排序方法，0为升序，1为降序(如果是多字段排列Sort指代最后一个排序字段的排列顺序(最后一个排序字段不加排序标记)--程序传参如：' SortA Asc,SortB Desc,SortC ')
@QueryCondition nvarchar(1500) = null, ----查询条件,不需WHERE
@Primarykey nvarchar(50), ----主表的主键
@EnabledDistinct bit = 0, ----是否添加查询字段的 DISTINCT 默认0不添加/1添加
@PageCount int = 1 output, ----查询结果分页后的总页数
@RecordCount int = 1 output ----查询到的记录数
)
AS
SET NOCOUNT ON
Declare @SqlResult nvarchar(1000) ----存放动态生成的SQL语句
Declare @SqlTotalCount nvarchar(1000) ----存放取得查询结果总数的查询语句
Declare @SqlStartOrEndID nvarchar(1000) ----存放取得查询开头或结尾ID的查询语句
Declare @SortTypeA nvarchar(10) ----数据排序规则A
Declare @SortTypeB nvarchar(10) ----数据排序规则B
Declare @SqlDistinct nvarchar(50) ----对含有DISTINCT的查询进行SQL构造
Declare @SqlCountDistinct nvarchar(50) ----对含有DISTINCT的总数查询进行SQL构造
declare @timediff datetime --耗时测试时间差
SELECT @timediff=getdate()
if @EnabledDistinct = 0
begin
set @SqlDistinct = 'SELECT '
set @SqlCountDistinct = 'Count(*)'
end
else
begin
set @SqlDistinct = 'SELECT DISTINCT '
set @SqlCountDistinct = 'Count(DISTINCT '+@Primarykey+')'
end
if @EnabledSort=0
begin
set @SortTypeB=' ASC '
set @SortTypeA=' DESC '
end
else
begin
set @SortTypeB=' DESC '
set @SortTypeA=' ASC '
end
--------生成查询语句--------
--此处@SqlTotalCount为取得查询结果数量的语句
if @QueryCondition is null or @QueryCondition='' --没有设置显示条件
begin
set @SqlResult = @FieldList + ' From ' + @TableName
set @SqlTotalCount = @SqlDistinct+' @RecordCount='+@SqlCountDistinct+' FROM '+@TableName
set @SqlStartOrEndID = ' From ' + @TableName
end
else
begin
set @SqlResult = + @FieldList + ' From ' + @TableName + ' WHERE (1>0) and ' + @QueryCondition
set @SqlTotalCount = @SqlDistinct+' @RecordCount='+@SqlCountDistinct+' FROM '+@TableName + ' WHERE (1>0) and ' + @QueryCondition
set @SqlStartOrEndID = ' From ' + @TableName + ' WHERE (1>0) and ' + @QueryCondition
end
----取得查询结果总数量-----
exec sp_executesql @SqlTotalCount,N'@RecordCount int out ',@RecordCount out
declare @TemporaryCount int --临时统计
if @RecordCount = 0
set @TemporaryCount = 1
else
set @TemporaryCount = @RecordCount
--取得分页总数
set @PageCount=(@TemporaryCount+@PageSize-1)/@PageSize
/**当前页大于总页数 取最后一页**/
if @PageNumber>@PageCount
set @PageNumber=@PageCount
--/*-----数据分页2分处理-------*/
declare @pageIndex int --总数/页大小
declare @lastcount int --总数%页大小
set @pageIndex = @TemporaryCount/@PageSize
set @lastcount = @TemporaryCount%@PageSize
if @lastcount > 0
set @pageIndex = @pageIndex + 1
else
set @lastcount = @pagesize
--//***显示分页
if @QueryCondition is null or @QueryCondition='' --没有设置显示条件
begin
if @pageIndex<2 or @PageNumber<=@pageIndex / 2 + @pageIndex % 2 --前半部分数据处理
begin
if @PageNumber=1
set @SqlTotalCount=@SqlDistinct+' TOP '+ CAST(@PageSize as VARCHAR(4))+' '+ @FieldList+' FROM '+@TableName+' ORDER BY '+ @SortFields +' '+ @SortTypeB
else
begin
if @EnabledSort=1
begin
set @SqlTotalCount=@SqlDistinct+' TOP '+ CAST(@PageSize as VARCHAR(4))+' '+ @FieldList+' FROM '+@TableName
+' WHERE '+@Primarykey+' <(SELECT MIN('+ @Primarykey +') FROM ('+ @SqlDistinct+' TOP '+ CAST(@PageSize*(@PageNumber-1) as Varchar(20)) +' '+ @Primarykey +' FROM '+@TableName
+' ORDER BY '+ @SortFields +' '+ @SortTypeB+') AS TBMinID)'+' ORDER BY '+ @SortFields +' '+ @SortTypeB
end
else
begin
set @SqlTotalCount=@SqlDistinct+' TOP '+ CAST(@PageSize as VARCHAR(4))+' '+ @FieldList+' FROM '+@TableName
+' WHERE '+@Primarykey+' >(SELECT MAX('+ @Primarykey +') FROM ('+ @SqlDistinct+' TOP '+ CAST(@PageSize*(@PageNumber-1) as Varchar(20)) +' '+ @Primarykey +' FROM '+@TableName
+' ORDER BY '+ @SortFields +' '+ @SortTypeB+') AS TBMinID)'+' ORDER BY '+ @SortFields +' '+ @SortTypeB
end
end
end
else
begin
set @PageNumber = @pageIndex-@PageNumber+1 --后半部分数据处理
if @PageNumber <= 1 --最后一页数据显示
set @SqlTotalCount=@SqlDistinct+' * FROM ('+@SqlDistinct+' TOP '+ CAST(@lastcount as VARCHAR(4))+' '+ @FieldList+' FROM '+@TableName
+' ORDER BY '+ @SortFields +' '+ @SortTypeA+') AS TempTB'+' ORDER BY '+ @SortFields +' '+ @SortTypeB
else
if @EnabledSort=1
begin
set @SqlTotalCount=@SqlDistinct+' * FROM ('+@SqlDistinct+' TOP '+ CAST(@PageSize as VARCHAR(4))+' '+ @FieldList+' FROM '+@TableName
+' WHERE '+@Primarykey+' >(SELECT MAX('+ @Primarykey +') FROM('+ @SqlDistinct+' TOP '+ CAST(@PageSize*(@PageNumber-2)+@lastcount as Varchar(20)) +' '+ @Primarykey +' FROM '+@TableName
+' ORDER BY '+ @SortFields +' '+ @SortTypeA+') AS TBMaxID)'
+' ORDER BY '+ @SortFields +' '+ @SortTypeA+') AS TempTB'+' ORDER BY '+ @SortFields +' '+ @SortTypeB
end
else
begin
set @SqlTotalCount=@SqlDistinct+' * FROM ('+@SqlDistinct+' TOP '+ CAST(@PageSize as VARCHAR(4))+' '+ @FieldList+' FROM '+@TableName
+' WHERE '+@Primarykey+' <(SELECT MIN('+ @Primarykey +') FROM('+ @SqlDistinct+' TOP '+ CAST(@PageSize*(@PageNumber-2)+@lastcount as Varchar(20)) +' '+ @Primarykey +' FROM '+@TableName
+' ORDER BY '+ @SortFields +' '+ @SortTypeA+') AS TBMaxID)'
+' ORDER BY '+ @SortFields +' '+ @SortTypeA+') AS TempTB'+' ORDER BY '+ @SortFields +' '+ @SortTypeB
end
end
end
else --有查询条件
begin
if @pageIndex<2 or @PageNumber<=@pageIndex / 2 + @pageIndex % 2 --前半部分数据处理
begin
if @PageNumber=1
set @SqlTotalCount=@SqlDistinct+' TOP '+ CAST(@PageSize as VARCHAR(4))+' '+ @FieldList+' FROM '+@TableName
+' WHERE 1=1 and ' + @QueryCondition + ' ORDER BY '+ @SortFields +' '+ @SortTypeB
else if(@EnabledSort=1)
begin
set @SqlTotalCount=@SqlDistinct+' TOP '+ CAST(@PageSize as VARCHAR(4))+' '+ @FieldList+' FROM '+@TableName
+' WHERE '+@Primarykey+' <(SELECT MIN('+ @Primarykey +') FROM ('+ @SqlDistinct+' TOP '+ CAST(@PageSize*(@PageNumber-1) as Varchar(20)) +' '+ @Primarykey +' FROM '+@TableName
+' WHERE (1=1) and ' + @QueryCondition +' ORDER BY '+ @SortFields +' '+ @SortTypeB+') AS TBMinID)'+' ORDER BY '+ @SortFields +' '+ @SortTypeB
end
else
begin
set @SqlTotalCount=@SqlDistinct+' TOP '+ CAST(@PageSize as VARCHAR(4))+' '+ @FieldList+' FROM '+@TableName
+' WHERE '+@Primarykey+' >(SELECT MAX('+ @Primarykey +') FROM ('+ @SqlDistinct+' TOP '+ CAST(@PageSize*(@PageNumber-1) as Varchar(20)) +' '+ @Primarykey +' FROM '+@TableName
+' WHERE (1=1) and ' + @QueryCondition +' ORDER BY '+ @SortFields +' '+ @SortTypeB+') AS TBMinID)'+' ORDER BY '+ @SortFields +' '+ @SortTypeB
end
end
else
begin
set @PageNumber = @pageIndex-@PageNumber+1 --后半部分数据处理
if @PageNumber <= 1 --最后一页数据显示
set @SqlTotalCount=@SqlDistinct+' * FROM ('+@SqlDistinct+' TOP '+ CAST(@lastcount as VARCHAR(4))+' '+ @FieldList+' FROM '+@TableName
+' WHERE (1=1) and '+ @QueryCondition +' ORDER BY '+ @SortFields +' '+ @SortTypeA+') AS TempTB'+' ORDER BY '+ @SortFields +' '+ @SortTypeB
else if(@EnabledSort=1)
set @SqlTotalCount=@SqlDistinct+' * FROM ('+@SqlDistinct+' TOP '+ CAST(@PageSize as VARCHAR(4))+' '+ @FieldList+' FROM '+@TableName
+' WHERE '+@Primarykey+' >(SELECT MAX('+ @Primarykey +') FROM('+ @SqlDistinct+' TOP '+ CAST(@PageSize*(@PageNumber-2)+@lastcount as Varchar(20)) +' '+ @Primarykey +' FROM '+@TableName
+' WHERE (1=1) and '+ @QueryCondition +' ORDER BY '+ @SortFields +' '+ @SortTypeA+') AS TBMaxID)'+' ORDER BY '+ @SortFields +' '+ @SortTypeA+') AS TempTB'+' ORDER BY '+ @SortFields +' '+ @SortTypeB
else
set @SqlTotalCount=@SqlDistinct+' * FROM ('+@SqlDistinct+' TOP '+ CAST(@PageSize as VARCHAR(4))+' '+ @FieldList+' FROM '+@TableName
+' WHERE '+@Primarykey+' <(SELECT MIN('+ @Primarykey +') FROM('+ @SqlDistinct+' TOP '+ CAST(@PageSize*(@PageNumber-2)+@lastcount as Varchar(20)) +' '+ @Primarykey +' FROM '+@TableName
+' WHERE (1=1) and '+ @QueryCondition +' ORDER BY '+ @SortFields +' '+ @SortTypeA+') AS TBMaxID)'+' ORDER BY '+ @SortFields +' '+ @SortTypeA+') AS TempTB'+' ORDER BY '+ @SortFields +' '+ @SortTypeB
end
end
------返回查询结果-----
exec sp_executesql @SqlTotalCount
--SELECT datediff(ms,@timediff,getdate()) as 耗时
print @SqlTotalCount
SET NOCOUNT OFF
---------------------------------------------调用存储过程asp.ent
DECLARE @return_value int, @PageCount int, @RecordCount int
SELECT @PageCount = 0 SELECT @RecordCount = 0
EXEC @return_value = [dbo].[usp_CommonDataResourcePaged]
@TableName = N'[dbo].[Student]',
@FieldList = N'[StudentID],[Number],[Name],[ClassID]',
@PageSize = 30,
@PageNumber = 50,
@SortFields = [StudentID],
@EnabledSort =N'1' ,
@QueryCondition = N'',
@Primarykey = N'[StudentID]',
@EnabledDistinct = 1,
@PageCount = @PageCount OUTPUT,
@RecordCount = @RecordCount OUTPUT
SELECT @PageCount as N'@PageCount', @RecordCount as N'@RecordCount'
SELECT 'Return Value' = @return_value
GO
------------------------------
/// <summary>
/// linq to ef 调用分页存储过程
/// </summary>
/// <param name="num"></param>
public void loada(int num)
{
var param = new List<SqlParameter>();
//定义数组接收存储过程参数
param.Add(new SqlParameter("@TableName","Student")); //表名
param.Add(new SqlParameter("@FieldList","StudentID,Number,Name,ClassID"));//显示字段
param.Add(new SqlParameter("@PageSize",10)); //显示条数
param.Add(new SqlParameter("@SortFields","StudentID")); //排序字段
param.Add(new SqlParameter("@PageNumber",num)); //显示那一页（分页传参）
param.Add(new SqlParameter("@EnabledSort",1)); //0为升序，1为降序
param.Add(new SqlParameter("@QueryCondition", "")); //where条件
param.Add(new SqlParameter("@Primarykey","StudentID")); //主键（代表唯一）
param.Add(new SqlParameter("@EnabledDistinct",1)); //是否添加查询字段的 DISTINCT 默认0不添加/1添加
param.Add(new SqlParameter("@PageCount",SqlDbType.Int)); //总页数
param.Add(new SqlParameter("@RecordCount",SqlDbType.Int)); //记录数
//输出参数指定参数类型
param[9].Direction = ParameterDirection.Output;
param[10].Direction = ParameterDirection.Output;
var dt = db.Database.SqlQuery<Student>("exec usp_CommonDataResourcePaged @TableName,@FieldList,@PageSize,@PageNumber,@SortFields,@EnabledSort,@QueryCondition,@Primarykey,@EnabledDistinct,@PageCount output,@RecordCount output", param.ToArray()).ToList();
int RecordCount = Convert.ToInt32(param[9].Value);
int PageCount = Convert.ToInt32(param[10].Value);
lbl_info.Text = "当前第"+ RecordCount + "页,共"+ PageCount + "页";
userinfo.DataSource = dt;
userinfo.DataBind();
}