Yql And Its Hotness

YQL (and its hotness)

YQL is Yahoo! Query Language

Yahoo! calls it:

A “mediator service” that enables developers to query, ﬁlter, and combine data across Yahoo! and beyond.

I call it:

An API for the public internet.

I think my description is a bit more catchy.

YQL offers a SQL-like syntax.

SELECT * FROM search.web WHERE query=quot;rubyquot;

Look familiar?

SELECT what FROM table WHERE ﬁlter

Tables in YQL are much the same as tables in SQL.

SELECT * FROM search.web WHERE query=quot;rubyquot;

You can SELECT speciﬁc elements or objects.

SELECT title FROM search.web WHERE query=quot;rubyquot;

WHERE ﬁlters have lots of operators.

= =! > < <= >= IN LIKE IS NULL IS NOT NULL AND OR

Join tables with sub-selects using matching values as a foreign key.

What is a YQL table?

The defaults are mostly data sources for Yahoo's own data APIs.

Some for HTML, JSON, XML, RSS, ATOM, CSV, feeds and microformats.

Tables are deﬁned in XML.

<?xml version=quot;1.0quot; encoding=quot;UTF-8quot;?> <table xmlns=quot;http://query.yahooapis.com/v1/schema/table.xsdquot;> <meta> <author>Paul Daniel</author> <documentationURL>http://apiwiki.twitter.com/REST+API +Documentation#show</documentationURL> </meta> <bindings> <select itemPath=quot;feed.entryquot; produces=quot;XMLquot;> <urls> <url>http://twitter.com/statuses/user_timeline/{id}.atom</url> </urls> <paging model=quot;pagequot;> <start default=quot;0quot; id=quot;pagequot;/> <pagesize max=quot;200quot; id=quot;countquot;/> <total default=quot;20quot;/> </paging> <inputs> <key id=quot;sincequot; type=quot;xs:stringquot; paramType=quot;queryquot; /> <key id=quot;since_idquot; type=quot;xs:stringquot; paramType=quot;queryquot; /> <key id=quot;idquot; type=quot;xs:stringquot; paramType=quot;pathquot; required=quot;truequot;/> </inputs> </select> </bindings> </table>

You can write your own.

And share them for others to use.

SHOW tables DESC table

What’s the output?

<?xml version=quot;1.0quot; encoding=quot;UTF-8quot;?> <query xmlns:yahoo=quot;http://www.yahooapis.com/v1/base.rngquot; yahoo:count=quot;10quot; yahoo:created=quot;2009-02-11T03:16:48Zquot; yahoo:lang=quot;en-USquot; yahoo:updated=quot;2009-02-11T03:16:48Zquot; yahoo:uri=quot;http:// query.yahooapis.com/v1/yql?q=SELECT+*+%0AFROM+search.web+WHERE+query%3D %22ruby%22quot;> <diagnostics> <publiclyCallable>true</publiclyCallable> <url execution-time=quot;116quot;>http://boss.yahooapis.com/ysearch/web/ v1/ruby?format=xml&start=0&count=10</url> <user-time>119</user-time> <service-time>116</service-time> <build-version>851</build-version> </diagnostics> <results> <result xmlns=quot;http://www.inktomi.com/quot;> <abstract><![CDATA[<b>Ruby</b> originated in Japan during the mid-1990s and was initially developed and <b>...</b> <b>Ruby</b> supports multiple programming paradigms, including functional, object <b>...</ b>]]></abstract> <clickurl>http://lrd.yahooapis.com/ _ylc=X3oDMTQ4NWxyYWUxBF9TAzIwMjMxNTI3MDIEYXBwaWQDb0pfTWdwbklrWW5CMWhTZnFUZ Ed5TkouTXNxZlNMQmkEcG9zAzEEc2VydmljZQNZU2VhcmNoV2ViBHNsawN0aXRsZQRzcmNwdml kA253RkNNVVBEQjJIMkxjVFRsQWt1ZVI0VXl6LkNJVW1TUXlBQUFLckk-/SIG=11tsuk1oo/ **http%3A//en.wikipedia.org/wiki/Ruby_(programming_language)</clickurl>

{ quot;queryquot;: { quot;countquot;:quot;10quot;, quot;createdquot;:quot;2009-02-11T03:20:22Zquot;, quot;langquot;:quot;en-USquot;, quot;updatedquot;:quot;2009-02-11T03:20:22Zquot;, quot;uriquot;:quot;http://query.yahooapis.com/v1/yql? q=SELECT+*+%0AFROM+search.web+WHERE+query%3D %22ruby%22quot;, quot;diagnosticsquot;: { quot;publiclyCallablequot;:quot;truequot;, quot;urlquot;: { quot;execution-timequot;:quot;109quot;,

Specify callback with ‘callback’ for JSON-P.

call({ quot;queryquot;: { quot;countquot;:quot;10quot;, quot;createdquot;:quot;2009-02-11T03:20:22Zquot;, quot;langquot;:quot;en-USquot;, quot;updatedquot;:quot;2009-02-11T03:20:22Zquot;, quot;uriquot;:quot;http://query.yahooapis.com/v1/yql? q=SELECT+*+%0AFROM+search.web+WHERE+query%3D %22ruby%22quot;, quot;diagnosticsquot;: { quot;publiclyCallablequot;:quot;truequot;, quot;urlquot;: { quot;execution-timequot;:quot;109quot;,

http://query.yahooapis.com/v1/ public/yql?q=SELECT%20* %20%0AFROM%20search.web %20WHERE%20query%3D %22ruby%22 &format=json&callback=call

Where is all this?

http://developer.yahoo.com/ yql/

http://developer.yahoo.com/ yql/console

Examples

I converted the GitHub Activity Badge today.

Took me 5 minutes. http://github.com/ lachlanhardy/github- activity-badge/

Oh! And I built this...

http://streamslide.com http://github.com/ lachlanhardy/ streamslide/

Thank you

http://lachstock.com.au

Yql And Its Hotness

by Lachlan Hardy on Feb 22, 2009

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