Re: bigint out of range

On 5/18/19 2:27 PM, Peter J. Holzer wrote:
> On 2019-05-18 10:49:53 -0700, David G. Johnston wrote:
>> On Saturday, May 18, 2019, Peter J. Holzer <hjp-pgsql@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.Ram@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.

How is it "using math" to use a hash key in a hash lookup table?

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