Daily DAX : Day 100 RIGHT
The RIGHT function in Power BI DAX (Data Analysis Expressions) is used to extract a specified number of characters from the right side of a text string. Here's a breakdown of the function and its main use case:
Syntax:
DAX
RIGHT(<text>, <num_chars>)
<text>: The text string from which you want to extract characters.
<num_chars>: The number of characters to extract from the right side of the text.
Example:
DAX
RIGHT("PowerBI", 3)
This would return "BI".
Main Use Case:
Data Cleansing and Transformation:
Extracting Substrings: Often, data in databases or spreadsheets might contain identifiers or codes where only the last few characters are relevant. For instance, if product codes end with a country code or year, you can use RIGHT to isolate that information:
DAX
RIGHT(ProductCode, 2)
If ProductCode is "P1234US", this would return "US".
Standardizing Data: When dealing with data like invoice numbers, account numbers, or any numeric codes where the format might vary but the last few digits are significant, you can use RIGHT to standardize these to a uniform length.
Reporting and Analysis:
Dynamic Text Slicing: In reports where you need to dynamically adjust text based on user input or data changes, RIGHT can be used to show only parts of a string that are relevant at that moment.
Data Validation:
Checking Data Integrity: You might use RIGHT to validate if certain data ends with expected characters or digits, ensuring data integrity or identifying anomalies.
Additional Notes:
If <num_chars> is greater than the length of the text, RIGHT returns the entire text.
If <num_chars> is less than or equal to 0, an empty string is returned.
Using RIGHT in combination with other DAX functions like LEFT, MID, or FIND can further enhance your ability to manipulate and analyze text data within Power BI. Remember, while RIGHT is straightforward, careful consideration of the data you're working with will lead to more effective use of this function.
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