Understanding the STARTOFQUARTER Function
The STARTOFQUARTER function is used to calculate the first day of the quarter for a given date. This function takes a single argument, which is the date that you want to calculate the quarter for. The function then returns the date of the first day of that quarter.
The syntax for the STARTOFQUARTER function is as follows:
The 'date' argument is the date that you want to calculate the quarter for. This argument can be in any date format that is recognized by Power BI.
Here are a few examples of how to use the STARTOFQUARTER function in Power BI:
Example 1: Calculating the First Day of the Quarter for a Given Date
Suppose you have a table with a column called 'Date', which contains a list of dates. You want to calculate the first day of the quarter for each of these dates. Here is how you can use the STARTOFQUARTER function to accomplish this:
First Day of Quarter = STARTOFQUARTER(‘Table'[Date])
In this example, we are using the STARTOFQUARTER function to calculate the first day of the quarter for each date in the 'Date' column of the 'Table' table. We are then storing the results in a new column called 'First Day of Quarter'.
Example 2: Filtering by Quarter
Suppose you have a table with sales data, and you want to filter the data to show only sales from the first quarter of each year. Here is how you can use the STARTOFQUARTER function to accomplish this:
Sales Q1 = CALCULATE(SUM(‘Sales'[Amount]), STARTOFQUARTER(‘Sales'[Date]) = ‘Sales'[Date])
In this example, we are using the STARTOFQUARTER function to filter the sales data to show only sales from the first quarter of each year. We are then calculating the sum of the 'Amount' column for the filtered data, and storing the result in a new column called 'Sales Q1'.
The Power BI DAX function STARTOFQUARTER is a powerful tool for anyone working with data in Power BI. This function allows you to easily calculate the first day of the quarter for any given date. By understanding the syntax and examples of this function, you can take your Power BI skills to the next level and make your data analysis more efficient and accurate.