Tuesday, September 23, 2014

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. Did we have any idea of a faster way?

Wednesday, September 10, 2014

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...

Tuesday, August 26, 2014

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 :-)


Saturday, June 28, 2014

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.

Monday, June 23, 2014

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.

Saturday, June 14, 2014

Tuesday, May 13, 2014

Mini-KScope in Nieuwegein


Can't wait until KScope14 in Seattle?

Or can't make it to Seattle?


Then you can see some of the presentations at a preview at the AMIS offices in Nieuwegein, where some of the KScope14 presenters will try out their presentations in Database development, APEX and ADF tracks. I've been invited to do my presentation on analytic functions, so I'll be there ;-)

It'll be Thursday June 12th 2014. See the agenda here and more details (in Dutch) and registration here.

See you there...