![]() ![]() If you wanted to round the previous example to a precision of 2 decimal points, you would write round(3.457, 2) instead, resulting in 3.46. The default is 0, so without a precision value, round() will simply round to the nearest whole number as mentioned above. If you want to keep some of those decimal points, you can add in a precision argument. For example, round(3.457) will give you the result 3. In its most simple and default form, it will round the decimal to the nearest whole number. floating point number) and rounds up or down. PHP’s round() function takes a decimal number (a.k.a. Let's fix this problem by rounding to the nearest five degrees using PHP’s round() function! These numbers aren’t really easy to set on an oven and a bit hard for the mind to process at first glance. Converting 400 degrees Fahrenheit shows up as 204 degrees Celsius and converting 200 degrees Celsius shows up as 392 degrees Fahrenheit. In this tutorial, you have learned how to use the PostgreSQL TRUNC() function to truncate numbers.I don’t know about you, but to me, these converted temperatures from my last post are a bit hard to read. The following picture illustrates the result: In this example, we used the TRUNC() function to truncate the average rentals to two decimal places. The following statement calculates the average rental rate by film category: SELECT So dont use round if you need to be sure that two decimal places are always displayed. See the following film, film_category, and category tables in the sample database: For example, echo round (92.0006829268, 2) will display 92, not 92.00. The second argument is -2, therefore, the TRUNC() function replaced the digits to the left of the decimal point that results in: 100 D) Truncate numbers returned by a query 23 Code language: CSS ( css ) C) Truncate numbers with negative second argument exampleĬonsider the following example: SELECT TRUNC(150. ![]() The following statement truncates a number to 2 decimal places: SELECT TRUNC( The result is: 10 B) Truncate to the specified decimal place The following example uses the TRUNC() function to truncate a number to an integer: SELECT TRUNC(10. Examples A) Truncate to a whole number example Otherwise, the function returns a numeric value if both arguments are used. The PostgreSQL TRUNC() function returns the same numeric data type as the first argument if the second argument is not specified. In other words, the number is truncated to a whole number. If you don’t specify it, it defaults to zero (0). In case the precision is a negative integer, the TRUNC() function replaces digits to the left of the decimal point. For example, let us add 3.456 + 2.162 and round the answer to 2 decimal places. If the precision argument is a positive integer, the TRUNC() function truncates digits to the right of the decimal point. When we need to round an answer to 2 decimal places, it means that we have to find the approximate value of a number up to the hundredths place, which is second to the right of the decimal point. The precision argument is an integer that indicates the number of decimal places. Say that I have a variable that outputs a number such as: 17.672. The number argument is a numeric value to be truncated The TRUNC() function accepts two arguments. ![]() The following illustrates the syntax of the PostgreSQL TRUNC() function: TRUNC( number ) Code language: CSS ( css ) Arguments The PostgreSQL TRUNC() function returns a number truncated to a whole number or truncated to the specified decimal places.
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