During the years we have been using Excel, we have come to understand that a formula calculates a value. Meaning, a single value. Right? Like … we write a formula, hit Enter, and the result is displayed in the cell.
Easy … that is how we have been using Excel for decades.
But … formulas can return multiple values (an array of values).
Historically, these types of array formulas were somewhat complicated to create and required pressing special keys to enter. As a result, many Excel users did not take advantage of them.
However … times have changed!
In the most recent versions of Excel, writing and managing such formulas is greatly simplified and no special keys are required. This makes it much easier to take advantage of these types of formulas.
But … hang on Jeff!
If I write a formula that returns multiple results, what happens? Does just the first result appear in the cell? Or what? Here’s how that works.
When you write a formula that returns multiple values (an array), the results spill out of the formula cell into the adjacent cells (called the spill range). Wait … what? Crazy … I know! And super cool. And, it gets even better.
If the number of results returned by the formula changes over time, the number of cells used to display the results changes accordingly. That is, it is dynamic. Thus the term Dynamic Array.
Dynamic Array Series
This is the first post in the Dynamic Arrays series where we’ll explore this concept. Hang on tight, it’s gonna be a wild ride.
This post is written by Jeff Lenning, President of Excel University
Read the rest of Jeff's post here
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