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JSONiq: All content tagged as JSONiq in NoSQL databases and polyglot persistence

28msec - query data from any source in real time

Derrick Harris writing about 28msec, still-in-stealth-mode, generic query language:

Their solution was to create a platform able to extract data from any of these sources, transform it into a standard format, and then let users analyze it using a single query language that looks a lot like the SQL they already know. 28msec is based on the open source JSONiq and Zorba query languages and will be available as a cloud service.

This sounds like a variant of an ETL process: Extract-Transform-Query. But it got me thinking of what Daniel Abadi has wrote about the difference between Hadapt and PolyBase, HAWQ—just replace Hadoop with another source of data and SQL with JSONiq:

[…] they all can access data in Hadoop, but there needs to be some sort of structured schema defined in order for the database to understand how to access it via SQL. So, bottom line, Polybase/SQL-H/Hawq let you dynamically get at data in Hadoop/HDFS that could theoretically have been stored in the DBMS all along, but for some reason is being stored in Hadoop instead of the DBMS.

The question is not if this process will work (ETL processes have been around for quite a while), but what can you do to optimize this extract-transform-query process.

Original title and link: 28msec - query data from any source in real time (NoSQL database©myNoSQL)

via: http://gigaom.com/2013/06/11/stealth-mode-28msec-wants-to-build-a-tower-of-babel-for-databases/


JSONiq: The JSON Query Language

The long time reader William Candillon of 28msec send me a link to JSONiq - The JSON Query Language, a group initiative to bring XQuery-like queriability to JSON:

Our goal in the JSONiq group, is to put the maturity of XQuery to work with JSON data. JSONiq is an open extension of the XQuery data model and syntax to support JSON.

After reading and experimenting a bit with JSONiq my initial thought is that while it looks interesting, it feels like an XMLish complicated query language that doesn’t really reflect the simplicity and philosophy of JSON.

let $stats := db:find("stats")
for $access in $stats
group by $url := $access("url")
return {
  "url": $url,
  "avg": avg($access("response_time")),
  "hits": count($access)
}

What do you think?

Original title and link: JSONiq: The JSON Query Language (NoSQL database©myNoSQL)