实现上千万条数据的分页显示

浏览:30日期:2023-06-01

-- 获取指定页的数据CREATE PROCEDURE GetRecordFromPage @tblName;;;varchar(255),;;;;-- 表名 @fldName;;;varchar(255),;;;;-- 字段名 @PageSize;;int = 10,-- 页尺寸 @PageIndex;int = 1,;-- 页码 @IsCount;;;bit = 0,;-- 返回记录总数, 非 0 值则返回 @OrderType;bit = 0,;-- 设置排序类型, 非 0 值则降序 @strWhere;;varchar(1000) = ''; -- 查询条件 (注意: 不要加 where)AS

declare @strSQLvarchar(6000);;;;-- 主语句declare @strTmpvarchar(100);;;;;-- 临时变量declare @strOrder varchar(400);;;;;-- 排序类型

if @OrderType != 0begin set @strTmp = '<(select min' set @strOrder = ' order by [' + @fldName +'] desc'endelsebegin set @strTmp = '>(select max' set @strOrder = ' order by [' + @fldName +'] asc'end

set @strSQL = 'select top ' + str(@PageSize) + ' * 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) + ' * from [' + @tblName + '] where [' + @fldName + ']' + @strTmp + '([' + @fldName + ']) from (select top ' + str((@PageIndex-1)*@PageSize) + ' [' + @fldName + '] from [' + @tblName + '] where ' + @strWhere + ' ' + @strOrder + ') as tblTmp) and ' + @strWhere + ' ' + @strOrder

if @PageIndex = 1begin set @strTmp = '' if @strWhere != '' set @strTmp = ' where ' + @strWhere

set @strSQL = 'select top ' + str(@PageSize) + ' * from [' + @tblName + ']' + @strTmp + ' ' + @strOrderend

if @IsCount != 0 set @strSQL = 'select count(*) as Total from [' + @tblName + ']'

exec (@strSQL)

GO

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