On Tue, Jan 18, 2011 at 05:39, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> I haven't looked at this patch, but it seems to me that it would be
> reasonable to conclude A != B if the va_extsize values in the toast
> pointers don't agree.
It's a very light-weight alternative of memcmp the byte data,
but there is still the same issue -- we might have different
compressed results if we use different algorithm for TOASTing.
So, it would be better to apply the present patch as-is.
We can improve the comparison logic over the patch in another
development cycle if possible.
--
Itagaki Takahiro
