This tutorial introduces the basic concepts of null handling for string and numeric columns in Apache Druid. The tutorial focuses on filters using the logical NOT operation on columns with NULL values ...

Before starting, prepare resources - IoT hub and Edge device - in Microsoft Azure. In Azure Portal, create IoT Hub resource. (Please proceed wizards and create a resource.) Next we prepare for a ...

PL/SQL stands for Procedural Language extension of SQL. PL/SQL is a combination of SQL along with the procedural features of programming languages. It was developed by Oracle Corporation in the early ...

The SQL Developer unit testing framework involves a set of sequential steps for each test case. The steps are as follows, including the user input for before the step is run and the framework ...