MID Function
Returns a string of characters from the middle of a text string, given a starting position and length.
Syntax
MID(<text>, <start_num>, <num_chars>)
Parameters
Term |
Definition |
|---|---|
text |
The text string from which you want to extract the characters, or a column that contains text. |
start_num |
The position of the first character you want to extract. Positions start at 1. |
num_chars |
The number of characters to return. |
Property Value/Return Value
A string of text of the specified length.
Remarks
Whereas Microsoft Excel has different functions for working with single-byte and double-byte characters languages, DAX uses Unicode and stores all characters with the same length.
Example
The following examples return the same results, the first 5 letters of the column, [ResellerName]. The first example uses the fully qualified name of the column and specifies the starting point; the second example omits the table name and the parameter, num_chars.
=MID('Reseller'[ResellerName],5,1))
=MID([ResellerName,5])
The results are the same if you use the following formula:
=LEFT([ResellerName],5)