On Mon, 30 Apr 2018 21:56:23 +0100, The Natural Philosopher
 wrote:
> On 30/04/18 20:57, Andy Leighton wrote:
>> How does SQL map into machine code?
>
> Pretty badly.:-)
>
>
>> How does Prolog? Erlang? Haskell?
>
> Even worse....?
>
> Probably why they have never been used for anything important that I can
> think of...

Really?

SQL is used extensively. Erlang was/is widely used in telephone exchanges
and mobile networks. I will admit that Prolog and Haskell haven't got wide
usage. But TBH many of the languages Gareth listed do not have wide
usage these days.

--
Andy Leighton => andyl@azaal.plus.com
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