Dax Function: Logical Functions

Category: Logical Functions

Logical functions in Power BI are designed to test conditions, return boolean results, and execute conditional logic. They enable the creation of dynamic calculations by evaluating conditions and providing results based on whether those conditions are true or false. These functions are essential for building expressions that adapt to different scenarios in your data.

Purpose of Logical Functions

  • Facilitate conditional calculations and decision-making in data models.
  • Enable dynamic filtering, categorization, and result computation based on logic.
  • Simplify complex formulas by introducing logical branches or alternatives.

Function

Description

AND

Evaluates whether both arguments are TRUE and returns TRUE only if both conditions are satisfied.

BITAND

Performs a bitwise “AND” operation on two numbers and returns the result.

BITLSHIFT

Shifts a number to the left by the specified number of bits.

BITOR

Performs a bitwise “OR” operation on two numbers and returns the result.

BITRSHIFT

Shifts a number to the right by the specified number of bits.

BITXOR

Performs a bitwise “XOR” operation on two numbers and returns the result.

COALESCE

Returns the first non-blank expression from a list of provided arguments.

FALSE

Produces the logical value FALSE.

IF

Evaluates a condition and returns one value if TRUE, otherwise, it returns another value.

IF.EAGER

Similar to IF, but evaluates both TRUE and FALSE branches regardless of the condition’s outcome.

IFERROR

Evaluates an expression and provides a specified value if an error occurs in the evaluation.

NOT

Reverses a logical value; changes TRUE to FALSE and vice versa.

OR

Determines whether at least one argument is TRUE and returns TRUE if so.

  

SWITCH

Compares an expression against multiple values and returns a corresponding result.

TRUE

Produces the logical value TRUE.

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1. What are logical functions in Power BI?

Logical functions test conditions and return results based on whether conditions are true or false, helping with conditional calculations and decision-making.

2. How does the IF function work in Power BI?

The IF function evaluates a condition and returns one value if the condition is true and another if it is false. It is useful for creating dynamic calculations.

3. What is the difference between AND and OR in Power BI?

The AND function returns TRUE only if all specified conditions are true, whereas OR returns TRUE if at least one condition is true.

4. What is the purpose of the SWITCH function in Power BI?

The SWITCH function evaluates an expression against multiple values and returns a corresponding result, reducing the need for nested IF statements.

5. How do I handle errors using logical functions in Power BI?

The IFERROR function allows you to return a specific value if an error occurs in an expression, ensuring smooth calculations.

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