一个分页存储过程代码

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--用途：分页存储过程(对有主键的表效率极高)
--说明：
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alter procedure [up_getrecordbypage]
@tblname varchar(255), -- 表名
@fldname varchar(255), -- 主键字段名
@pagesize int = 10, -- 页尺寸
@pageindex int = 1, -- 页码
@isrecount 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 @strsql varchar(6000) -- 主语句
declare @strtmp varchar(100) -- 临时变量
declare @strorder varchar(400) -- 排序类型
if @ordertype != 0
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
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 = 1
begin
set @strtmp =''
if @strwhere != ''
set @strtmp = ' where ' + @strwhere
set @strsql = 'select top ' + str(@pagesize) + ' * from ['
+ @tblname + ']' + @strtmp + ' ' + @strorder
end
if @isrecount != 0
set @strsql = 'select count(*) as total from [' + @tblname + ']'+' where ' + @strwhere
exec (@strsql)