[xquery-talk] [xml-dev] Re: using FLWOR expressions (aka SQL..) directly in Python
pavel.velikhov at gmail.com
Fri Oct 21 11:29:46 PDT 2016
So we made just a small number of announcements and we actually forgot
about posting to some prominent
Python lists, like comp.lang.python. Thanks for the idea!
But so far the response was quite positive.
On 21 Oct 2016, at 21:15, Ihe Onwuka <ihe.onwuka at gmail.com> wrote:
It answers my question.
I would like to see how this goes down in the Python community so do you
have links to blogs and stuff where the announcement has been made.
My 2 cents would have been to release and not mention anything about XQuery
On Fri, Oct 21, 2016 at 1:59 PM, daniela florescu <dflorescu at me.com> wrote:
> Based on my experience, lots of data processing people use Python those
> days, yet they are not helped
> much by the available tools in their ecosystem.
> PythonQL is to Python what LinQ was to C#, that’s all.
> A simple and more natural way to run queries directly integrated in your
> normal programming and
> a replacement to the horrible scripts that most people need to write today
> for data manipulation.
> Now, is this “XQuery" !? Nope.
> The FLWOR expressions of XQuery have nothing to do with XML, neither
> syntactically, nor semantically.
> They are just a generalized, cleaner and more powerful form of data
> comprehension , out of which SQL’s SELECT-FROM-WHERE
> is an example, but not the only one. (Python has it’s now form of
> comprehension for example).
> In fact in PhytonQL we tried to avoid what we perceived as serious
> problems with the adoption of XQuery.
> For example we made the following syntactic choices (good or bad, we’ll
> 1. FOR and FROM are synonyms. Choose whatever you like the best…..
> 2. IF and WHERE are synonyms. Again, choose whatever you like the best…..
> 3. We avoided the (over)loaded RETURN keyword of XQuery and called it
> SELECT like in SQL.
> 4. We put the SELECT clause first, like in SQL.
> But other then this, it’s just 100% FLWOr expression, with windowing,
> grouping, etc.
> Does this make sense ?
> Best regards
> On Oct 21, 2016, at 10:46 AM, Ihe Onwuka <ihe.onwuka at gmail.com> wrote:
> Is the big thing here integration with the Python ecosystem?
> Otherwise what is this offering to people who are not XQueryphobic.
> On Fri, Oct 21, 2016 at 1:13 PM, daniela florescu <dflorescu at me.com>
>> For all exasperated data scientists writing mind bending, complicated
>> Python scrips to process their data: the power of complex,
>> yet familiar, compact and optimizable SQL queries directly in Python,
>> running on structured as well as unstructured data (XML, JSON).
>> Well, actually it’s not SQL per se. It’s the better, cleaner and more
>> powerful version of SELECT-FROM-WHERE,…. its the
>> power of XQuery’s FLWOR expressions, directly usable as an expression in
>> Python — together with any other expected goodies,
>> complex path expressions, etc.
>> Best regards
>> talk at x-query.com
talk at x-query.com
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