Yuan Wang <wangyuanzju@stripped> writes:
> Sorry for one more question. My engine just fill the columns marked in
> read_set (and primary keys as above) to before_record, and leaves
> others untouched. I though that these unneeded columns can left as
> garbage in before_record because MySQL will not use them. Now I know
> this is not true, they will be written out into the binlog. However I
> still won't fill these unneeded columns for perfmance reasons. So,
> should I mark these unfilled columns to be NULL?
I am pretty sure that NDB does not fill in these columns to be NULL. So I
would think it is not necessary but I do not know the details.