The ISO 8601 format is an international standard for calculating dates and times that differs from the Gregorian calendar due to how the starting week of a year (Week 1) is calculated. hyper Format (Link opens in a new window) hyper extract, date functions can be calculated using the traditional Gregorian calendar or the ISO 8601 Standard. See the Create a date calculation section below for an example. If the original date is '', then the calculation would return '' to indicate that Q2 started on April 1, four months into the year. So, if the original date is '', using the above calculation would return '' to indicate that Q1 started on January 1. The date calculation might look something like this: For example, you can find the date of the beginning of the quarter for any existing date value. From these existing values, you can create new date values with a date function, such as the DATETRUNC function. The visualization updates with the exact quarter date for each row in the table.ĭate functions allow you to manipulate dates in your data source.įor example, you might have a date field with year, month, and day for each value (). On the Rows shelf, right-click YEAR(Quarter Date) again and select Discrete. On the Rows shelf, right-click YEAR(Quarter Date) and select Exact Date. This is because Tableau rolls date data up to the highest level of detail. The visualization updates with year values. Just like your other fields, you can use it in one or more visualizations.įrom the Data pane, under Dimensions, drag Quarter Date to the Rows shelf and place it to the right of MONTH(Order Date). The new date calculated field appears under Dimensions in the Data pane. In the calculation editor that opens, do the following: Select Analysis > Create Calculated Field.
On the Rows shelf, click the plus icon ( +) on the QUARTER(Order Date) field to drill down to MONTH(Order Date). QUARTER(Order Date) is added to the Rows shelf and the view updates. On the Rows shelf, click the plus icon ( +) on the YEAR(Order Date) field. In Tableau Desktop, connect to the Sample-Superstore saved data source, which comes with Tableau.įrom the Data pane, under Dimensions, drag Order Date to the Rows shelf.
Create a date calculationįollow along with the steps below to learn how to create a date calculation. It also demonstrates how to create a date calculation using an example. If the Num_digits argument is negative, the function removes all decimal places and rounds up that number of digits to the left of the decimal point.įor example, if the value of the Num_digits argument is -2, the function will remove all digits to the right of the decimal point and round the first and second digits to the left of the decimal point up to the nearest 100.This article introduces date functions and their uses in Tableau.If the Num_digits argument is 1, the function leaves only one digit to the right of the decimal point and rounds it up to the next number.If the Num_digits argument is 0, the function rounds the value up to the nearest integer.Num_digits (required) is the number of digits that you want to round the Number argument to. This argument can contain the actual data for rounding, or it can be a cell reference to the location of the data in the worksheet. Number (required) is the value you want to round up. This is the syntax for the ROUNDUP function:Ī function's syntax refers to the layout of the function and includes the function's name, brackets, and arguments. Select cell see the function = ROUNDUP(A2, 2 ) in the formula bar above the worksheet.
With this method, it's not necessary to key in commas between each of the function's arguments as you must when typing the function into a cell. Using the dialog box simplifies entering the function's arguments.
In this example, we're going to reduce the number in cell A2 (above) to two decimal places using the ROUNDUP function.