Beth Skwarecki is Lifehacker’s Senior Health Editor and has been writing about health, fitness, and science here since 2015. Beth was the recipient of the 2017 Carnegie Science Award in science ...

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Overview: SQL remains a core skill for data management across industries in 2026Free courses build fundamentals while paid ...

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 ...

Structured Query Language, or SQL, is used to analyze large datasets. Today’s best SQL courses offer hands-on training for mastering database management. Structured Query Language, or SQL, is the ...

The best things in life are free. Sign up for our email to enjoy your city without spending a thing (as well as some options when you’re feeling flush). Our newsletter hand-delivers the best bits to ...

A common SQL habit is to use SELECT * on a query, because it’s tedious to list all the columns you need. Plus, sometimes those columns may change over time, so why not just do things the easy way? But ...

Starting in college and continuing into my first roles post-graduation, I was tasked with performing various financial and economic analyses to arrive at conclusions about the health of companies, ...

In this course you will learn all about the Structured Query Language ("SQL".) We will review the origins of the language and its conceptual foundations. But primarily, we will focus on learning all ...

Step-By-Step: Learn the basics of using DTS in Microsoft SQL Server Your email has been sent Learn how Data Transformation Services (DTS) can help you import, export, and/or transform data from ...