Re: [Firebird-devel] HASH function (CORE-4436)

[Adriano d. S. F. <adr...@gm...>]

On 19/07/2017 11:44, Leyne, Sean wrote:
>
>>> We need to decide whether the algorithm name can be passed dynamically
>>> (and thus be presented as "value" in the grammar) or must be
>>> predefined (via a string literal or maybe token). The latter gives us
>>> more flexibility regarding the result type.
>> This is an interesting idea.
>>
>> We can use special syntax (like some others system functions):
>>
>> HASH( <value> [WITH <algorithm>] )
> Why do we need to extend the current function?
>
> Why not create separate, built-in, functions for each hash type with names* that align with the common algorithm name?
>
Because "HASH" is an excellent namespace/container for hash functions.


Adriano