This overview will cover: - YQL SELECT, INSERT, UPDATE and DELETE query Syntax - Open Data Tables - YQL Execute

1. 1 Jonathan LeBlanc – Technology Evangelist Yahoo! Developer Network Twitter: @jcleblanc

2. 2

3. 3 YQL Query StructureSELECT * FROM Internet

4. 4 YQL Test Console Available At: http://developer.yahoo.com/yql/console

5. 5 Running Queries - SELECT Query Structure SELECTmyColumn, myTitle FROM myTable(0, 50) WHEREmyColumn = 'value' ANDmyTitle = 'title‘ LIMIT3 OFFSET 10 | sort(field='myColumn') | reverse()

6. 6 Running Queries - INSERT / UPDATE / DELETE Modify Data on the Internet Create Tweets, Add Blog Entries, Update Databases Current Tables Using I/U/D Twitter Status, bit.ly URL Shortner, Yahoo! Profile Status / Update Stream, Amazon SimpleDB

7. 7 Running Queries - INSERT Query Structure INSERT INTObitly.shorten (login, apiKey, longUrl) VALUES (’ME', 'API_KEY', 'http://yahoo.com')

8. 8 Running Queries - UPDATE Query Structure UPDATE social.profile.status SET status="Using YQL UPDATE" WHEREguid=“NJFIDHVPVVISDXZKT7UKED2WHU”

9. 9 Running Queries - DELETE Query Structure DELETE FROM twittertable WHERE tweetid="12345" AND username="twitter_username" AND password="twitter_password

10. 10 Running Queries – Sub-selects with the IN clause SELECT * FROM flickr.photos.search WHERE (lat, lon) IN (SELECT centroid.latitude, centroid.longitude FROM geo.places WHERE text="SFO")

11. 11 Running Queries – Available Tables YQL Command: SHOW Tables Number of Standard Tables: 113 Number of Community Tables: 610 Total Number of Tables: 723 Contribute Tables to: http://www.github.com/yql/yql-tables/

12. 12 Running Queries – Table Syntax YQL Command: DESC tablename

13. Running Queries – URL Format http://query.yahooapis.com/v1/yql?[params] http://query.yahooapis.com/v1/public/yql?[params] Params q=[QUERY] format=[XML / JSON] diagnostics=[true / false] debug=[true / false] env=[.env file link] callback=[function name] 13

15. format=[XML / JSON / JSONP / JSONP-X]

16. diagnostics=[true / false]

17. debug=[true / false]

18. env=[.env file link]

20. 16 YQL Open Data TablesWrap Your Own API or Data Source

21. 17 Open Data Tables – XML File Syntax <?xml version="1.0" encoding="UTF-8"?> <table xmlns="http://query.yahooapis.com/v1/schema/table.xsd"> <meta></meta> <bindings></bindings> </table>

22. 18 Open Data Tables – XML File Syntax <?xml version="1.0" encoding="UTF-8"?> <table xmlns="http://query.yahooapis.com/v1/schema/table.xsd"> <meta></meta> <bindings></bindings> </table>

23. 19 Open Data Tables – XML File Syntax <?xml version="1.0" encoding="UTF-8"?> <table xmlns="http://query.yahooapis.com/v1/schema/table.xsd"> <meta> <author>Jonathan LeBlanc</author> <description>My Table</description> <documentationURL>www.site.com</documentationURL> <sampleQuery>SELECT * FROM {table} </sampleQuery> </meta> <bindings></bindings> </table>

24. 20 Open Data Tables – XML File Syntax <?xml version="1.0" encoding="UTF-8"?> <table xmlns="http://query.yahooapis.com/v1/schema/table.xsd"> <meta></meta> <bindings></bindings> </table>

25. 21 Open Data Tables – XML File Syntax <?xml version="1.0" encoding="UTF-8"?> <table xmlns="http://query.yahooapis.com/v1/schema/table.xsd"> <meta></meta> <bindings> <select itemPath="" produces="XML" > <urls> <urlenv="all”>http://www.site.com/{user}</url> </urls> <inputs> <key id="user" type="xs:string" paramType="path" required="true" /> </inputs> </select> </bindings> </table>

26. 22 Open Data Tables – Invoking a Table Definition The USE clause USE 'http://github.com/yql/yql-tables/raw/master/google/google.buzz.updates.xml' AS buzz.updates; SELECT * FROM buzz.updates WHERE user='nakedtechnologist'

27. 23 Open Data Tables – .env Files http://datatables.org/alltables.env USE 'http://www.datatables.org/amazon/amazon.ecs.xml' AS amazon.ecs; USE 'http://www.datatables.org/bitly/bit.ly.shorten.xml' AS bit.ly.shorten; USE 'http://www.datatables.org/dopplr/dopplr.auth.xml' AS dopplr.auth; USE 'http://www.datatables.org/dopplr/dopplr.city.info.xml' AS dopplr.city.info;

28. Google Buzz Table Available At: http://github.com/yql/yql-tables

29. 25 YQL ExecuteExtending Open Data Tables

31. 27 YQL Execute – XML File Syntax <?xml version="1.0" encoding="UTF-8"?> <table xmlns="http://query.yahooapis.com/v1/schema/table.xsd"> <meta></meta> <bindings> <select itemPath="" produces="XML" > <urls></urls> <inputs></inputs> </select> </bindings> </table>

32. 28 YQL Execute – XML File Syntax <?xml version="1.0" encoding="UTF-8"?> <table xmlns="http://query.yahooapis.com/v1/schema/table.xsd"> <meta></meta> <bindings> <select itemPath="" produces="XML" > <urls></urls> <inputs></inputs> <execute></execute> </select> </bindings> </table>

33. Global Disaster Alert and Coordination System Table Available At: http://github.com/yql/yql-tables

34. 30 Conclusion Build applications faster (and that run faster)

35. This Presentation http://www.slideshare.net/jcleblanc/yql-overview YQL Documentation http://developer.yahoo.com/yql YQL Console http://developer.yahoo.com/yql/console YQL Github Account (Contribute Tables) http://github.com/yql/yql-tables

36. 32 Thank YouQuestions?