[xquery-talk] asterixdb

[daniela florescu]

And how can I forget to add to the list:

PATH EXPRESSIONS with good expressive power.

Again, we had them in XML since 1996. 

It’s 2015, Pavel.

20 years later.


Best
Dana



> On Oct 10, 2015, at 4:48 AM, daniela florescu <dflorescu at me.com> wrote:
> 
> No, Pavel, by no means, NO.
> 
> While N1Ql is finally something relatively well defined, and MUCH better then the alternatives, 
> in terms of expressive power, we go back to 1993.
> 
> N1QL is 99% a copy of OQL designed by Sophie Cluet in 1993 for object-oriented databases, which had
> nested objects and arrays, and 
> 
> After you got used to program in XQuery, going back to N1QL is going back to the cave age.
> 
> I personally won’t, and I would rather go did cow’s dung (time to review the classics https://www.youtube.com/watch?v=b2F-DItXtZs <https://www.youtube.com/watch?v=b2F-DItXtZs> :-)
> 
> Here are a couple of things (random things that come to my mind in 3 seconds…..):
> 
> 1. Compositionality. It’s 2015 , not 1977, for God’s sake.
> 
> 2. Casts, explicit and implicit casts. Absolutely necessary for processing data of unknown structure.
> 
> 3. If-then-elses.  Absolutely necessary for processing data of unknown structure.
> 
> 4. try-catch.  Absolutely necessary for processing data of unknown structure.
> 
> 5. Object and array constructors with dynamically computed content.  It's 2015, not 1977 for God’s sake.
> 
> 5. Functions and especially recursive functions. Absolutely necessary for processing data of unknown structure.
> 
> 6. Declarative updates. No comment.
> 
> 7. Full text. Again, it 2015, not 1977 for God’s sake.
> 
> =========
> 
> N1Ql is a cute little thing that brings us back in 1993…..:(
> 
> 
> depressed.
> 
> Go back digging cow’s dung (or fashion in my case..)  while people are still so ignorant in terms of data processing ……
> 
> Wake me up when it’s done.
> 
> Dana
> 
> 
> 
>> On Oct 10, 2015, at 4:41 AM, Pavel Velikhov <pavel.velikhov at gmail.com <mailto:pavel.velikhov at gmail.com>> wrote:
>> 
>> N1QL seems to have all the features to support a JSONiq front-end. Seems like a simple translation, except for the group-by clause.
>> I guess if people like 4-valued logic, breaking up constructors into group by and select clauses - let them have it :)
>> 
>>> On 10 Oct 2015, at 13:03, daniela florescu <dflorescu at me.com <mailto:dflorescu at me.com>> wrote:
>>> 
>>> Andy,
>>> 
>>> The story is more complicated here.
>>> 
>>> The professor at Irvine Univ. in charge of the students team who designed AsterixDB, Mike Carey, is 
>>> today the Chief Architect of CouchDB, who ships the N1QL that I just sent yesterday.
>>> 
>>> Mike Carey knows exactly XQuery, given that he was in charge of my XQuery processor at BEA Systems after I left.
>>> 
>>> So it’s definitely not by lack of knowledge that he went BACKWARDS and N1QL is even more primitive then SQL 92
>>> (just added some primitive forms of path expressions to it..)
>>> 
>>> It’s probably market pressure…. 
>>> 
>>> IT HAS TO LOOK LIKE SQL, AND IT HAS TO USE THE THREE MAGIC KEYWORDS “select” “from” AND “where”.
>>> 
>>> 
>>> Other then that, who cares that from a data processing perspective, we go backwards where we were in 1994 !???
>>> (and nested select-from-where in the from clause are considered “disruptive” ..huh..)
>>> 
>>> Depressing. 
>>> 
>>> Are users so ignorant and they prefer a vanilla syntax that they know over significant expressive power  ?
>>> 
>>>  I wonder.
>>> 
>>> Dana
>>> 
>>> 
>>> 
>>> 
>>>> On Oct 9, 2015, at 3:31 PM, Andy Bunce <bunce.andy at gmail.com <mailto:bunce.andy at gmail.com>> wrote:
>>>> 
>>>> Hi,
>>>> 
>>>> Not tried it myself but, AsterixDB [1] may be of interest to XQuery users.
>>>> 
>>>> >The heart of AQL[2] is the FLWOR (for-let-where-orderby-return) expression. The roots of this expression were borrowed from the expression of the same name in XQuery.
>>>> 
>>>> and
>>>> 
>>>> >but XQuery was co-designed by a diverse band of experienced language designers (SQL, functional programming,and XML experts) 
>>>> >and we wanted to avoid revisiting many of the same issues [3]
>>>> 
>>>> Regards
>>>> /Andy
>>>> 
>>>> [1] https://asterixdb.ics.uci.edu/ <https://asterixdb.ics.uci.edu/>
>>>> [2] https://asterixdb.ics.uci.edu/documentation/aql/manual.html <https://asterixdb.ics.uci.edu/documentation/aql/manual.html>
>>>> [3] http://www.vldb.org/pvldb/vol7/p1905-alsubaiee.pdf <http://www.vldb.org/pvldb/vol7/p1905-alsubaiee.pdf>
>>>> 
>>>> _______________________________________________
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>>> _______________________________________________
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>> С уважением,
>> Павел Велихов
>> pavel.velikhov at gmail.com <mailto:pavel.velikhov at gmail.com>
> 
> _______________________________________________
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