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DOUG problem-knuser brainstorm eftermiddagsworkshop og middag - Tirsdag 2. december

UPDATE:Da hveranden tilmeldte indtil nu bedst kan tirsdag 2. december og de andre også kan den dag, så er det hermed vedtaget at det bliver tirsdag vi mødes, nørder om nummerserier, og får en gang mad og drikke.Nedenstående er derfor rettet til. Tilmeld jer til mig på kbh {snabel-a} thansen.dk så snart I ved om I kan.Vi ses!--- --- --- ---

CSV, XML and JSON parsing - a comparison over versions

Via Steven Feuerstein I was asked to try and give advice concerning fastest way to parse CSV data in PL/SQL. The case was that they had a different database that could be setup to deliver data as a webservice serving either CSV, XML or JSON, and they wished to let their APEX application use PL/SQL to retrieve data from that other database via such webservices. They were not yet on 12.1.0.2.0 so they did not have JSON_TABLE, and they seemed to find that do-it-yourself parsing of CSV data was the fastest.

JSON_TABLE or XMLTABLE - comparison with geocoding

Previously I've demonstrated how to use function XMLTABLE to query Google maps routing directions. Now Oracle version 12.1.0.2.0 has function JSON_TABLE to do similar querying on JSON data rather than XML data. So let's try that out and spot some differences...

Unforgettable In-Memory

Inspired by Maria Colgans quest for In-Memory bumper sticker slogans for OOW14, I couldn't resist a little fun. Musical readers should stop reading now :-)Sung to the tune of the old Nat King Cole classic

KScope14 - on my way home

For some reasons I got lounge access here at Seattle airport when going home fra KScope14. So I can use the last couple hours here lounging comfortably writing a few words about an awesome week here.

MEMBER OF comparison of PL/SQL and SQL

In the Kscope14 sunday symposium today, Steven Feuerstein explained that MEMBER OF syntax was slow in SQL and fast in PL/SQL. I challenged him that perhaps it was missing indexes on the nested table? My mistake - I got the task of testing it and see if that was the case... So I tested and was surprised at the answer.UPDATE 2014-10-16: Based on Iudiths comment to this post, I decided to re-test this - both to delve a bit deeper into whether she has a point or not, and also to try it out on a 12.1.0.2.0 instance.

Nice evening in Nieuwegein

Thursday I went for a quick trip to Nieuwegein for the Amis KScope Preview. Nice evening :-)After a train to Copenhagen and a plane to Amsterdam, I checked in at the CitizenM hotel at Shiphol airport. A bit different hotel - toilet and shower in big glass tubes in the room - but actually fairly nice for a single traveller.

See you all in Seattle

In June 2014 I hope to see a whole lot of you at ODTUG's awesome conference Kscope14...

SQL Book Club - Any recommendations?

I got a note from Steven Feuerstein the other day about a group of developers in Stockholm starting an SQL Book Club. What a great idea :-) Anyway, they had asked Steven if he had any recommendations for good books on Advanced SQL. And Steven asked me the same question...And now I'm asking the blog readers: Do you have any favorite books on writing Advanced SQL you can recommend to this new SQL Book Club?

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