mssql 批量添加为数据库中表添加字段和字段描述

declare @sql varchar(200), @name varchar(40)
declare my_cursor scroll cursor for
    select name from sysobjects where type = 'u'
open my_cursor
fetch next from my_cursor into @name
while(@@fetch_status=0)
begin
    print 'processing ' + @name
    --set @sql = N'alter table  ' + @name + N' add models int  NULL DEFAULT 0' --这里是添加字段方法
    set @sql =' EXECUTE   sp_addextendedproperty   N''MS_Description'',''备用字段 0表示正常 1表示导入数据  2表示药监隐藏数据'',N''user'',N''dbo'',N''table'',N'''+@name+''',N''column'',N''models'''   --这里是添加描述的方法
   
    exec(@sql)
    print 'finished'
    fetch next from my_cursor into @name
end
close my_cursor
deallocate my_cursor