Case Statement in Power BI

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Case Statement in Power BI, A case statement is a type of statement that evaluates conditions and returns a value when the first condition is met.

In Power BI, the easiest way to implement a case statement is by using the SWITCH function in DAX.

Basic Syntax of SWITCH Function

The basic syntax of the SWITCH function is as follows:

new = SWITCH(
    'my_data'[Position],
    "G", "Guard",
    "F", "Forward",
    "C", "Center",
    "None"
)

Case Statement in Power BI

In this example, a new column named new is created. It examines the values in the Position column of the my_data table and returns:

• “Guard” if Position equals “G”
• “Forward” if Position equals “F”
• “Center” if Position equals “C”
• “None” if Position contains any other value

Practical Example: Using SWITCH in Power BI

Let’s walk through a practical example to see how this function works in Power BI.

Suppose we have a table named my_data in Power BI that contains information about various basketball players. We want to create a new column that converts the values in the Position column from “C”, “G”, and “F” to “Center”, “Guard”, and “Forward” respectively.

1. Open Power BI Desktop and navigate to the Table tools tab.
2. Click the New column icon.
3. Enter the following formula into the formula bar:

new = SWITCH(
    'my_data'[Position],
    "G", "Guard",
    "F", "Forward",
    "C", "Center",
    "None"
)

This formula will generate a new column called new containing the values specified in the SWITCH function.

Result of the SWITCH Function

The new column will display the following values:

• “Guard” if Position is “G”
• “Forward” if Position is “F”
• “Center” if Position is “C”
• “None” if Position is any other value

By following these steps, you can efficiently create a case statement in Power BI using the SWITCH function.

This method not only simplifies the process but also enhances the readability and manageability of your data transformation logic.

Enhance Your Power BI Skills

By mastering the SWITCH function and case statements in Power BI, you can streamline your data analysis and reporting tasks.

Continue exploring more Power BI features to become proficient in creating insightful and actionable reports.

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