What result does LENGTH('char') provide?

The LENGTH function in programming contexts is typically used to determine the number of characters in a string. When applied to a string such as 'char', it counts each individual character, including letters, digits, spaces, and special characters, returning a numeric value that represents the total count of those characters.

For instance, in the example 'char', the function will return 4, as there are four characters in that text string. This understanding is crucial in data manipulation and processing, especially when validating input or preparing data for storage and display.

The other options do not accurately describe the function's output. For example, measuring the length in bytes is more relevant in contexts dealing with character encoding, which is not the primary function of LENGTH in this scenario. Similarly, counting only numeric digits would not align with the function's broader purpose of counting all characters, and measuring the length of the longest word is unrelated to the LENGTH function’s purpose, as it assesses a single string rather than comparing multiple words.