Explain the DATE Function ' ISOQUARTER' in Tableau with Example?

 Tableau does provide a function called ISOQUARTER, which is used to extract the ISO week-based quarter from a given date.

The ISOQUARTER function in Tableau returns an integer representing the quarter of the year based on the ISO week numbering system.

The syntax of the ISOQUARTER function in Tableau is as follows:

ISOQUARTER(date)

• date is the date value from which you want to extract the ISO week-based quarter.

Here's an example to illustrate the usage of the ISOQUARTER function in Tableau:

Suppose you have a dataset with a date field called "Order Date" containing various date values. To extract the ISO week-based quarter from the "Order Date" field, you can use the ISOQUARTER function as follows:

ISOQUARTER([Order Date])

In this example, the ISOQUARTER function is applied to the "Order Date" field. It will return an integer representing the ISO week-based quarter for each date value in the "Order Date" field.

The resulting output will be a column of integers representing the ISO week-based quarter for each corresponding date in the "Order Date" field.

The ISOQUARTER function is particularly useful when you need to analyze or group data based on the ISO week-based quarters. It follows the ISO 8601 standard for week numbering, where each week starts on a Monday and the first week of the year is the week that contains the majority of days of the new year.