SUBSTITUTE Function (DAX)
Replaces existing text with new text in a text string.
SUBSTITUTE(<text>, <old_text>, <new_text>, <instance_num>)
|text||The text in which you want to substitute characters, or a reference to a column containing text.|
|old_text||The existing text that you want to replace.|
|new_text||The text you want to replace old_text with.|
|instance_num||(optional) The occurrence of old_text you want to replace. If omitted, every instance of old_text is replaced|
A string of text.
Use the SUBSTITUTE function when you want to replace specific text in a text string; use the REPLACE function when you want to replace any text of variable length that occurs in a specific location in a text string.
The SUBSTITUTE function is case-sensitive. If case does not match between text and old_text, SUBSTITUTE will not replace the text.
This DAX function may return different results when used in a model that is deployed and then queried in DirectQuery mode. For more information about semantic differences in DirectQuery mode, see http://go.microsoft.com/fwlink/?LinkId=219171.
The following formula creates a copy of the column [Product Code] that substitutes the new product code NW for the old product code PA wherever it occurs in the column.
=SUBSTITUTE([Product Code], "NW", "PA")