Write any two differences between Single row functions and Aggregate functions. Name two functions from each category. code example

Example: single row functions vs multiple row functions

• Single Row Functions:(Lower, Upper, Substr, Length)
function that will run for each row and 
return value for each row.

Multiple Row Functions (Group functions, Aggregate functions):
(Count, MIN , MAX, AVG, SUM)
will run for multiple rows and return a single value