Excel's UNIQUE function is the modern, non-destructive answer to the mailing list problem. Instead of deleting rows from your ...

Whether you're assigning random shifts, anonymizing a study, or shuffling a deck, randomizing rows in an Excel table manually ...

MySQL table primary keys and unique indexes prevent multiple rows with the same index from being added to the table. If you try to insert a duplicate row with a ...

Learn the difference between Excel COUNT and COUNTA, plus TEXTBEFORE and TEXTAFTER tricks, so you clean text and totals with ...

Daniel Jassy, CFA, is an Investopedia Academy instructor and the founder of SPYderCRusher Research. He contributes to Excel and Algorithmic Trading. Amy is an ACA and the CEO and founder of OnPoint ...

Microelectromechanical systems (MEMS) technology has allowed the realization of cost-effective, high-performance deformable mirrors for adaptive-optics-enhanced imaging. The idea of using an array of ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Xavier Lorenzo / GettyImages If you're looking for a loan, finding the most affordable ...

Minecraft is a game best known for its survival gameplay. Players are expected to spend hours mining and grinding for resources to accomplish whatever task they put their minds to. However, the grind ...