oracle round保留两位小数

Oracle Round function is used to round a number to a specified decimal place. The syntax of the Round function in Oracle is:

ROUND(number

decimal_place)

Here

number is the number that we want to round

and decimal_place is the number of decimal places to which we want to round the number.

For example

if we have a number 12.3456 and we want to round it to 2 decimal places

we can use the Round function as follows:

SELECT ROUND(12.3456

2) FROM dual;

This will return 12.35 as the rounded number.

The Round function in Oracle rounds the number to the nearest value. If the number is exactly halfway between two values

the function rounds towards the nearest even number. For example

if we have a number 12.5 and we want to round it to 0 decimal places

the Round function will return 12.

We can also use the Round function with negative decimal places to round the number to the nearest integer. For example

if we have a number 12.3456 and we want to round it to the nearest integer

we can use the Round function as follows:

SELECT ROUND(12.3456

0) FROM dual;

This will return 12 as the rounded number.

The Round function in Oracle is very useful when working with numbers that need to be rounded to a specific decimal place. It helps in ensuring that the number is displayed in the desired format. It is important to note that the Round function does not change the original number

it just returns the rounded value.

In conclusion

the Round function in Oracle is a powerful tool for rounding numbers to a specified decimal place. It is easy to use and helps in ensuring that the numbers are displayed in the desired format. Whether rounding to a specific decimal place or rounding to the nearest integer

the Round function is a handy function to have in your Oracle toolkit.