1. #Select the statement that shows the sum of population of all countries in 'Europe' SELECT SUM(population) FROM bbc WHERE region = 'Europe' 2. #Select the statement that shows the number of ...

In this tutorial, we will step through installing PostgreSQL, connecting to the database, loading some data, and running a variety of SQL queries.

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 ...

In this Microsoft SQL Server and JDBC tutorial, you'll learn how to connect to a Microsoft SQL Server in Java using JDBC. The steps are relatively straightforward: Each database is different, so ...

Free Tutorial : Performing a Unit Test of Your PL/SQL in Oracle SQL - h2Purposeh2This tutorial shows you how to perform a unit test of your PLSQL code in Oracle SQL Developer 30h2Time to ...