Notifications You must be signed in to change notification settings For basics follow the SQL Bolt tutorial. Then you can set up a postgres database in podman (or docker) and try out the exercises ...
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 ...
Follow this step-by-step guide to install PostgreSQL, load data, connect to a database, and execute SQL queries including table joins PostgreSQL is an open-source, object-relational (also called ...
Learn how to group data in SQL using the "Group BY" clause. In this tutorial, you will see how helpful SQL can be for effective data manipulation. In SQL, data grouping is performed using the GROUP BY ...
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 ...
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 ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback