将表中数据生成SQL语句

CREATE PROCEDURE dbo.UspOutputData  @tablename sysname  AS  declare @column varchar(1000)  declare @columndata varchar(1000)  declare @sql varchar(4000)  declare @xtype tinyint  declare @name sysname  declare @objectId int  declare @objectname sysname  declare @ident int   set nocount on  set @objectId=object_id(@tablename)   if @objectId is null -- 判斷對象是否存在  begin  print 'The object not exists'  return  end  set @objectname=rtrim(object_name(@objectId))   if @objectname is null or charindex(@objectname,@tablename)=0 --此判断不严密  begin  print 'object not in current database'  return  end   if OBJECTPROPERTY(@objectId,'IsTable') < > 1 -- 判斷對象是否是table  begin  print 'The object is not table'  return  end   select @ident=status&0x80 from syscolumns where id=@objectid and status&0x80=0x80   if @ident is not null  print 'SET IDENTITY_INSERT '+@TableName+' ON'   declare syscolumns_cursor cursor  for select c.name,c.xtype from syscolumns c where c.id=@objectid order by c.colid   open syscolumns_cursor  set @column=''  set @columndata=''  fetch next from syscolumns_cursor into @name,@xtype   while @@fetch_status < >-1  begin  if @@fetch_status < >-2  begin  if @xtype not in(189,34,35,99,98) --timestamp不需处理，image,text,ntext,sql_variant 暂时不处理   begin  set @column=@column+case when len(@column)=0 then'' else ','end+@name   set @columndata=@columndata+case when len(@columndata)=0 then '' else ','','',' end   +case when @xtype in(167,175) then '''''''''+'+@name+'+''''''''' --varchar,char  when @xtype in(231,239) then '''N''''''+'+@name+'+''''''''' --nvarchar,nchar  when @xtype=61 then '''''''''+convert(char(23),'+@name+',121)+''''''''' --datetime  when @xtype=58 then '''''''''+convert(char(16),'+@name+',120)+''''''''' --smalldatetime  when @xtype=36 then '''''''''+convert(char(36),'+@name+')+''''''''' --uniqueidentifier  else @name end   end   end   fetch next from syscolumns_cursor into @name,@xtype   end   close syscolumns_cursor  deallocate syscolumns_cursor   set @sql='set nocount on select ''insert '+@tablename+'('+@column+') values(''as ''--'','+@columndata+','')'' from '+@tablename   print '--'+@sql  exec(@sql)   if @ident is not null  print 'SET IDENTITY_INSERT '+@TableName+' OFF'   GO  exec UspOutputData  tableName[表名]