HackerRank isn’t just a random collection of problems; they’ve organized their SQL section pretty well. You can find ...

The FIND function allows you to find a text string within another. It returns the position at which a character or string begins within another text string. The output of the above function will be 5, ...

Diane Costagliola is a researcher, librarian, instructor, and writer who has published articles on personal finance, home buying, and foreclosure. Michael M. Santiago / Staff / Getty Images A knock-in ...

In his decades-long career in tech journalism, Dennis has written about nearly every type of hardware and software. He was a founding editor of Ziff Davis’ Computer Select in the 1990s, senior ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Khadija Khartit is a strategy, investment, ...

In his decades-long career in tech journalism, Dennis has written about nearly every type of hardware and software. He was a founding editor of Ziff Davis’ Computer Select in the 1990s, senior ...

Cognitive distortions involve negative thinking patterns that aren’t based on fact or reality. You can help change these thinking patterns to promote your mental well-being. “I have the worst luck in ...

In video production, B-roll (also called B-reel or Broll) is footage that's considered secondary to the main action being recorded. Although the term B-roll hearkens back to the use of 16 mm film, it ...

Cattle egrets live on insects. And in the savannah, insects congregate on the ubiquitous water buffalo. In sub-Saharan Africa, for example, you'll find these birds constantly perched atop buffalo ...

A trademark can provide essential protection against rival competitors stealing your brand identity or reputation without paying compensation. Trademark infringement frequently occurs in the business ...

There are a number of reasons the National Guard may be called to duty in the United States, including to help after disasters and provide security for events. A president mobilizing the Guard to ...