> That's not right --- AFAIR there is no length in the tuple data. You
> must use the length from the 'page item' pointer that points to this
> tuple if you want to know the total tuple length.
Oops, I meant attribute length...
> If you were testing with tables containing single varlena columns, then
> you may have seen the varlena datum's length word and taken it for total
> length of the tuple --- but it's only total length of that one column.
Yes, I obviously had assumed that this length was common to all types (I was
testing with varchars before).
I presume then that I get the sizes based on some system tables. What query
should I run to give me the layout (in the order it's on disk) and the size
of each non-varlen attribute?
> Your example dump looks like F24D 0000 is userid, FFFF FFFF is folderid,
> and 1300 0000 is the varlena length word for foldername.
This is correct.
thanks
-Michael