On 2019-05-18 10:49:53 -0700, David G. Johnston wrote: > On Saturday, May 18, 2019, Peter J. Holzer <hjp-pg...@hjp.at> wrote: > > On 2019-05-16 08:48:51 -0700, David G. Johnston wrote: > > On Thu, May 16, 2019 at 8:31 AM Daulat Ram <daulat....@exponential.com> > wrote: > > > > > > url_hash | bigint | | not null | > > > > > > Change the type of url_hash; make it text instead of bigint. > > Or numeric(38, 0). I think it isn't coincidence that he tries to store > a 38-digit number in it. > > > You don’t perform math on a hash
That's not generally true. Hashes are used for further computation for
example in hash tables or in cryptography.
> thus its not a number
This is just silly. All hash functions I have ever encountered compute a
single fixed size integer from a stream of integers. The result may be
larger than a machine word, in which case the representation in C (or a
similar low level language) may be an array of words (or bytes), but
it's still an integer.
hp
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_ | Peter J. Holzer | we build much bigger, better disasters now
|_|_) | | because we have much more sophisticated
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__/ | http://www.hjp.at/ | -- Ross Anderson <https://www.edge.org/>
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