What is the purpose of split in Oracle?

In Oracle, the split function is used to divide a string into multiple sub-strings and return an array containing these sub-strings. The split function takes two parameters: the string to be divided and the separator. It divides the string into multiple sub-strings based on the separator and stores these sub-strings in an array to return. For example, if we have a string “Hello,World”, we can use the split function to divide it into two sub-strings “Hello” and “World”, and store them in an array. To call the split function using a comma as the separator, it can be done like this:

SELECT split('Hello,World', ',') FROM dual;

This will return an array with two elements: [‘Hello’, ‘World’]. The split function is very useful when working with strings, especially in cases where you need to separate a string into multiple parts for processing.