Re: age(xid) function bug

Tom Lane wrote:
> Bruce Momjian <bruce(at)momjian(dot)us> writes:
> > However, the function only does a subtraction with no adjustment for
> > overflow, and considering it returns a signed int, it can't even display
> > the full range of valid values:
>
> Say again? The possible range of ages is only 2 billion.

If we assume that only xid stored in actual tables are used, yes:

test=> select txid_current();
txid_current
--------------
402
(1 row)

test=> select age('4294967290'::xid);
age
-----
409
(1 row)

OK, so it does work based on the limitations we place on stored xids.

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

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