判断数据库中表是否存在？分页存储过程

declare @a int
set @a=(select count(name) from sysobjects where name='表名')
print @a

if(@a>0)
begin
drop table 表名
end
else
begin

select * into 新表 from 旧表
   select * from 新表
end

 

create 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

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
            begin
                set @strTmp = '<(select min'
                set @strOrder = ' order by [' + @fldName +'] desc'
                --如果@OrderType不是0，就执行降序，这句很重要！
            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)
GO