MID DAX Function (Text)
Returns a string of characters from the middle of a text string, given a starting position and length.
Syntax
MID ( <Text>, <StartPosition>, <NumberOfCharacters> )
| Parameter | Attributes | Description |
|---|---|---|
| Text |
The text string from which you want to extract the characters. |
|
| StartPosition |
The position of the first character you want to extract. Positions start at 1. |
|
| NumberOfCharacters |
The number of characters to return. |
Return values
Scalar A single string value.
A string of text of the specified length.
Examples
-- LEFT, RIGHT, MID and LEN are the basic string-manipulation functions
DEFINE
VAR Val = "DAX is so cool!"
EVALUATE
{
( "LEFT ( Val, 3 ) ", LEFT ( Val, 3 ) ),
( "RIGHT ( Val, 5 )", RIGHT ( Val, 5 ) ),
( "MID ( Val, 11, 4 )", MID ( Val, 11, 4 ) ),
( "LEN ( Val )", LEN ( Val ) )
}
| Value1 | Value2 |
|---|---|
| LEFT ( Val, 3 ) | DAX |
| RIGHT ( Val, 5 ) | cool! |
| MID ( Val, 11, 4 ) | cool |
| LEN ( Val ) | 15 |
EVALUATE
VAR SSN = "123-45-6789"
VAR SecureSSN = "XXX-XX-" & MID ( SSN, 8, 3 ) & "X"
RETURN { SecureSSN }
| Value |
|---|
| XXX-XX-678X |
Related functions
Other related functions are:
Last update: Oct 22, 2025 » Contribute » Show contributors
Contributors: Alberto Ferrari, Marco Russo
Microsoft documentation: https://docs.microsoft.com/en-us/dax/mid-function-dax
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