PIVOT and UNPIVOT

The PIVOT and UNPIVOT operators were introduced in Oracle 11g and the other day I helped out a friend using these operators.
He wanted the data in the columns to be "shifted to the left". To explain a little more, take a look at the following data:

ID V1 V2 (more...)

Tree with Checkboxes: Save the Data – JS Array to PL/SQL

In two previous blogposts I described a method to transform a regular APEX Tree component to a Tree component with checkboxes. The second blogpost described a way to retrieve the data from the database using JSON and AJAX and check the appropriate checkboxes. In this last part of the series (more...)

Oracle In-Memory Database

One of the big announcements of Oracle Open World 2013 is the Oracle Database In-Memory option. By simply "flipping the switch" the application will run faster than ever before.
From my understanding flipping the switch is making changes to some (not sure which) initialisation parameters.

Secret Sauce

What is the (more...)

Tree with Checkboxes – Pre-Select Data with JSON

After you have modified the standard APEX tree to a tree with checkboxes (see this blogpost) you will probably need to find a way to load data from the database and show the values previously checked by the user.
In this blogpost I will show you how to load (more...)

APEX: Tree with Checkboxes

The APEX Tree component is based on jsTree which is a jQuery Tree Plugin. However not all functionality is implemented in APEX. Knowing the component on which it is based, we can find the documentation and enhance the Tree in APEX. One of these enhancements is to have checkboxes in (more...)