# IF function (DAX)

Checks if a condition provided as the first argument is met. Returns one value if the condition is TRUE, and returns another value if the condition is FALSE.

## Syntax

```
IF(logical_test>,<value_if_true>, value_if_false)
```

#### Parameters

Term | Definition |
---|---|

logical_test | Any value or expression that can be evaluated to TRUE or FALSE. |

value_if_true | The value that is returned if the logical test is TRUE. If omitted, TRUE is returned. |

value_if_false | The value that is returned if the logical test is FALSE. If omitted, FALSE is returned. |

## Return value

Any type of value that can be returned by an expression.

## Remarks

If the value of **value_if_true** or **value_if_false** is omitted, IF treats it as an empty string value ("").

If the value referenced in the expression is a column, IF returns the value that corresponds to the current row.

The IF function attempts to return a single data type in a column. Therefore, if the values returned by **value_if_true** and **value_if_false** are of different data types, the IF function will implicitly convert data types to accommodate both values in the column. For example, the formula `IF(<condition>,TRUE(),0)`

returns a column of ones and zeros and the results can be summed, but the formula `IF(<condition>,TRUE(),FALSE())`

returns only logical values. For more information about implicit data type conversion, see Data Types Supported (SSAS Tabular).

## Example

The following example uses nested IF functions that evaluate the number in the column, Calls, from the table FactCallCenter. The function assigns a label as follows: **low** if the number of calls is less than 200, **medium** if the number of calls is less than 300 but not less than 200, and **high** for all other values.

```
=IF([Calls]<200,"low",IF([Calls]<300,"medium","high"))
```

## Example

The following example gets a list of cities that contain potential customers in the California area by using columns from the table ProspectiveBuyer. Because the list is meant to plan for a campaign that will target married people or people with children at home, the condition in the IF function checks for the value of the columns [MaritalStatus] and [NumberChildrenAtHome], and outputs the city if either condition is met and if the customer is in California. Otherwise, it outputs the empty string.

```
=IF([StateProvinceCode]= "CA" && ([MaritalStatus] = "M" || [NumberChildrenAtHome] >1),[City])
```

Note that parentheses are used to control the order in which the AND (&&) and OR (||) operators are used. Also note that no value has been specified for **value_if_false**. Therefore, the function returns the default, which is an empty string.

## See also

TRUE function (DAX)

FALSE function (DAX)

NOT function (DAX)

IF function (DAX)

DAX function reference