Oracle ROUND Function Explained

In Oracle, the ROUND function is used to round numbers to a specified number of decimal places. It takes two parameters – the first parameter is the number to be rounded and the second parameter is the number of decimal places to retain. For example, ROUND(3.14159, 2) will return 3.14. The ROUND function can also accept an optional third parameter to specify the rounding method. For instance, ROUND(3.5, 0, 1) will return 4 while ROUND(3.5, 0, -1) will return 3.