String splitting in SQL isn't a single, straightforward function like some other languages might offer. Most SQL databases don't have a built-in function to directly split strings. This means you need to use a combination of string functions to achieve the desired result. These functions, such as SUBSTRING and CHARINDEX, allow you to extract portions of a string based on positions or delimiters. A common approach involves using a loop or a recursive Common Table Expression (CTE) to iterate through the string and extract each segment. This process is often necessary when dealing with data stored in a single string field that needs to be parsed into multiple columns or rows. For example, a log file might store multiple events in a single line, separated by a comma. String splitting allows you to extract each event into a separate row for analysis.