When rounding a number to two digits, increase the decimal value at the second place by one for numbers that are greater than or equal to 5, and keep it the same for all other numbers. For this, the query statement will be as follows – Let’s consider the table educbademo and round its price column to two decimal points. Now, let us round the values of the certain column to decimal values using the round function. That gives the following output with a value of 985.57 as the digit after two decimals 6 is greater than or equal to 5 hence the second digit value is increased by one, and the output is 985.57 instead of 985.56. Now, if our number is 985.566, then while rounding to two digits, the numeric value that will result is as follows using the below query statement – That will result in the following output because as the decimal digit after two points, 1 is less than 5, so the number will be rounded as 985.56. For rounded to two-digits, the query statement should contain the integer parameter decimal_count in the round() function as 2, and the statement should be as follows – Consider a decimal numeric number say 985.561. Let us see how we can do this with the help of an example. Instead of integer values, we will round the numbers to a particular decimal number with certain decimal points that we specify in the second parameter to the round() function. Now, let us round the values of the column price to integral value using the round() function and the following query statement –Ĭode: SELECT ROUND(price) FROM educbademo Let us confirm the contents of the table by using the following SELECT query – INSERT INTO educbademo VALUES(5,87.1547)

INSERT INTO educbademo VALUES(4,352.462) INSERT INTO educbademo VALUES(3,94.4616) For this, let us create a table named educbademo with the numeric field as price and id integer using the following create a query.Ĭode: CREATE TABLE educbademo (id INTEGER PRIMARY KEY, price DECIMAL) Īnd add a few rows in it using the following query statements –Ĭode: INSERT INTO educbademo VALUES(1,23.565) Now let us manipulate the field of a certain table and try to round the value. Rounding this number in PostgreSQL using the following query statement For that, let’s take a number, say 98.536. Let’s observe the integer value retrieved when the digit after the decimal point is 5 or greater than 5. For that, our query statement will be as follows – Let us perform and see the results on the PostgreSQL terminal. Let us learn how we can use the round() function to round the numeric values in PostgreSQL with the help of examples: Converting the numeric value to integersĬonsider one number say 45.145 when this number is rounded to an integer using the ROUND() function, it rounds up to 45 because the decimal value after a point is not equal to or greater than 5 digit. returned_value: If you do not specify the second parameter decimal_count, the round function returns a value that is most often of the same data type as the data_type of source_value.If the second parameter value is specified then the datatype of the returned value is numeric.The default value of this integer parameter is 0 when we do not mention it. decimal_count: The optional parameter specifies the number of decimal points the source_value should be rounded up.source_value: You need to round the numeric value or numeric expression to an integer or a specific number of decimal points to maintain precision.Where the two parameters carry the following meaning – Syntax: returned_value = ROUND (source_value ) Hadoop, Data Science, Statistics & others

Postgres round function