据说很快的数据库分页存储过程

2021-05-06 10:23:11 浏览数 (1)

代码语言:javascript复制
create procedure SqlDataPaging
@tbName varchar(255),        --表名
@tbFields varchar(1000),      --返回字段
@OrderField varchar(255),   --排序的字段名
@PageSize int,                 --页尺寸
@PageIndex int,                --页码
@OrderType bit,                --排序类型,1是升序,0是降序
@strWhere varchar(1500),    --查询条件
@Total int output            --返回总记录数
as
declare @strSql varchar(5000)     --主语句
declare @strOrder varchar(200)    --排序
declare @strSqlCount nvarchar(500)--查询记录总数主语句
declare @strtemp varchar(50)      --排序附加语句
--------------排序-----------------1是降序,0未升序
if @OrderType !=0
    begin
        set @strtemp= '>(select max('
        set @strOrder='order by '   @OrderField   ' asc '
    end
else
    begin
        set @strtemp= '<(select min('
        set @strOrder='order by '  @OrderField   ' desc'
    end
--------------总记录数---------------
if @strWhere !=''
    begin
        set @strSqlCount='Select @TotalCout=count(*) from  '   @tbName   'where  '  @strWhere
    end
else
    begin
        set @strSqlCount='Select @TotalCout=count(*) from  '   @tbName
    end
--------------如果是第一页------------
if @PageIndex =1
    begin
        if @strWhere !=''
            begin
                set @strSql = 'Select top'  str(@PageSize)  ' '   @tbFields   '  from '  @tbName  ' where '   @strWhere   ' '   @strOrder
            end
        else
            begin
                set @strSql = 'Select top'  str(@PageSize)  ' '   @tbFields   '  from '  @tbName   ' '   @strOrder
            end
    end
else
    begin
        if @strWhere !=''
            begin
                set @strSql='Select top '  str(@PageSize)   ' '   @tbFields 
                             ' from '   @tbName   ' where ' @OrderField  ' '
                              @strtemp  ' '  @OrderField  ') from (select top'
                             str((@PageIndex-1)*@PageSize)   ' ' @OrderField  ' from ' @tbName
                              @strWhere  ' '  @strOrder  ') as tb)'  @strOrder
            end
        else
            begin
                set @strSql='Select top '   str(@PageSize)   ' '   @tbFields 
                             ' from '   @tbName   ' where ' @OrderField   ' '
                              @strtemp  ' '  @OrderField  ') from (select top'
                             str((@PageIndex-1)*@PageSize)   ' ' @OrderField  ' from ' @tbName 
                              ' '  @strOrder  ') as tb)'  @strOrder
            end
    end
exec sp_executesql @strSqlCount,N'@TotalCout int output',@Total output
exec(@strSql)

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