round sql to get rounded data in MySQL query

round sql

math(X,D); // X : Argument , D: Number of decimal places

We can get rounded data by using round sql query. Here is an example

Rounding off data up to 2 decimal places .

SELECT ROUND(14.729,2); // Output is 14.73

Examples with different number of decimal place.

SELECT ROUND(4.589,3); // Ouput 4.589

SELECT ROUND(4.589,4); // Ouput 4.5890

SELECT ROUND(4.589,2); // Ouput 4.59

SELECT ROUND(4.589,1); // Ouput 4.6

SELECT ROUND(4.589); // Ouput 5

SELECT ROUND(-4.589); // Ouput -5

SELECT ROUND(-4.389);  // Output -4

Using negative value for Number of decimal places.

SELECT  ROUND(234.96,-1); // Output is 230
SELECT  ROUND(236.96,-1); // Output is 240 
SELECT  ROUND(3463.4896,-2); // Output is 3500

Negative value for decimal place ( D) will affect left of decimal places.

We will use our student table and get the rounded data by using round query.

Percentage is a column name in our student table. Here we store the percentage value of each student mark. One of our student Max has got 79.2982 percentage. This number we can round off and display without any decimal value by using command like this.

SELECT name,percentage,round(percentage,0) as rnd FROM `student4`

Inside round function we can change the number of decimal places required to 1,2,3 etc .. here is an example.

SELECT name,percentage,round(percentage,2) as rnd FROM `student4`

Output is here

name	percentage	rnd
Max Ruin	79.2982	79.30
Arnold	59.6491	59.65
Krish Star	63.1579	63.16
John Mike	80.7018	80.70
Alex John	78.9474	78.95
My John Rob	72.9825	72.98
Asruid	89.4737	89.47
Tes Qry	72.9825	72.98
Big John	52.6316	52.63

Try with different values The sql dump of student4 table is here .
SQL dump of Student4 table here

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round sql

Rounding off data up to 2 decimal places .

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