The difference between round and mysqlround in oracle

Oracle ROUND function returns a NUMBER value, which uses rounding by default and supports rounding with specified decimal places; MySQL ROUND function returns a DECIMAL value, which adopts double rounding and can only be rounded to an integer.

The difference between Oracle ROUND and MySQL ROUND functions

Oracle ROUND and MySQL ROUND functions are both used to compare numbers Functions that perform rounding, but there are some key differences between them:

Return Type

• The Oracle ROUND function returns a value of type NUMBER.
• MySQL ROUND function returns a value of type DECIMAL.

Rounding method

• By default, the Oracle ROUND function uses rounding (closer to even numbers).
• The MySQL ROUND function uses double rounding (rounding to the nearest even number).

Precision

• The Oracle ROUND function accepts a second parameter that specifies the number of decimal places for rounding.
• The MySQL ROUND function does not support a second argument, so it can only round to the nearest integer.

Syntax

• The syntax of Oracle ROUND function is: ROUND(number, decimals)
• The syntax of the MySQL ROUND function is: ROUND(number)

Example

• Rounding to 2 decimal places in Oracle : ROUND(123.456, 2)
• Rounding to the nearest integer in MySQL: ROUND(123.456)

Other differences

• Oracle ROUND function supports negative precision and allows rounding to the left of the decimal point.
• The MySQL ROUND function does not support negative precision.
• The Oracle ROUND function can be used in different rounding modes, including rounding, rounding to the nearest even number, or zero.
• The MySQL ROUND function only supports rounding.

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