On Mon, 2010-08-30 at 19:40 -0400, Tom Lane wrote:
> That's really *not* supposed to happen, assuming that both machines have
> IEEE float arithmetic and competently written float I/O code.
On my machine I see:
=> select float4in(float4out((1::numeric + 1e-7::numeric)::float4)) =
(1::numeric + 1e-7::numeric)::float4;
?column?
----------
f
(1 row)
> My own WAG is that we're talking about a GiST bug that causes it to
> recognize or not recognize duplicates depending on order of insertion.
> But that's theorizing far in advance of the data.
Seems plausible.
Regards,
Jeff Davis
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