February 2023 - Terr For MER

Java and databases are arguably some of the most essential pieces of knowledge for any developer, as these two topics form the foundations of most software engineering applications. Whether you are looking to develop an app or be part of an enterprise level software project, understanding Java and its various frameworks, as well as having …

SQLite is not a toy

Here’s why SQLite is perfect for your day-to-day work. It doesn’t matter if you are a developer, analyst, tester, admin or product manager.

For starters, a few known facts:

SQLite is the most widely used database management system in the world, included in all popular operating systems.

Works without a server.

For developers, it is embedded directly into the application.

For everyone else – a convenient console (REPL) in one file (sqlite3.exe on Windows, sqlite3 on Linux / macOS).

Console, import and export

The console is a killer feature of SQLite: a more powerful data analysis tool than Excel, and much simpler than any pandas. Data from CSV is loaded with one command, the table is created automatically:

> .import –csv city.csv city
> select count (*) from city;
1117

Basic SQL features are supported, and the console shows the result in a nice table. There are also advanced SQL features, but more about them later.

select
century || ‘th century’ as dates,
count (*) as city_count
from history
group by century
order by century desc;