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 = 10, -- 页尺寸
@PageIndex int = 1, -- 页码
@doCount 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(1500) = ‘’‘’ -- 查询条件 (注意: 不要加 where)
)
AS
/* 定义变量 */
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 --如果@OrderType不是0,就执行降序,这句很重要!
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
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)